Q: How fast is the ball right before it strikes the ground?
A: a. The displacement of the ball is 5.00 m. therefore, s=ut+12at2u=0,a=gs=0t+12gt25.00 m=+1210…
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A: Given speed of the diving board is u = 7 m/s and the height of the diving board is h = 3 m As there…
Q: The velocity of the football is
A: Option A 40m/s due East is correct , see next step for complete explanation.
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A: Given:-
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A: Given data: Initial speed u =30 m/s Acceleration due to gravity a=-9.8 m/s2 (acting upwards)
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Q: What is the meaning of instantaneous velocity?
A: instantaneous velocity
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A: The given data are: u=-25 m/st=2 s Here, u denotes the initial speed and t denotes the time.
Q: stone is dropped from the edge of a roof, and hits the ground with a velocity of -175 feet per…
A: GivenFinal velocity of stone hits the ground ,v=-175 ft/s2Acceleration due to gravity, g=32 ft/s2
Q: What is the Instantaneous Speed?
A: Variation of distance with respect to variation in time at any instant is known as instantaneous…
Q: When the rocket engines on a starship are suddenly turned off, while travelling in empty space, the…
A: To explain : How will the starship travel once its engines are suddenly turned off ?
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A: Given data: Initial velocity (Vi) = 0 m/s Final velocity (Vf) = 452 m/s Displacement (d) = 0.93 m…
Q: A projectile is fired with an initial velocity of 400 m/s hits a cliff 2000 meter apart determine…
A: range = V0 cos(60) x t here V0 = 400m/s time of flight is t seconds range = 2000m thus, time (t) =…
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A: Given that, Initial velocity = 3.73 m/s Time = 1.960 s
Q: What acceleration will be
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A: Given:- if the jumper starts at position A Find:- What will be the velocity of the ski jumper at…
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A: The distance the object falls or height,
Q: What is the velocity of the ball 1 after the
A: 2.44 m/s
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A:
Q: a projectile fired from a canon travels 450 meters away in 5 seconds, how high did the projectile…
A: Given: The horizontal distance traveled by the cannon ball is 450 m, The time of flight is 5 s.
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A:
Q: What is a change in velocity called?
A: The velocity of an object is defined as the ratio of the displacement of the object to the time…
Q: You are walking around your neighborhood and you see a child on top of a roof of a building kick a…
A: Scenario - A child is kicking a football from top of a building of certain height at an angle with…
Q: A rock is thrown down from the top of a cliff with a velocity of 5.65 m/s [down) The cliff is 38 m…
A: Initial velocity (u) = 5.65 m/s Height (h) = 38 m
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A: Given Height of the track (h) =62.1 m The initial velocity of the roller coaster (u) =0
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Q: How fast must the swim
A: Sloth must swim at speed of 0.119 m/s Explanation is in next step.
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Q: A body moving with a speed of subjected 5 m/s is. to an accelara- Calcute the speed A tion of 20 m/s…
A: Introduction : In this question we are provided with value of initial velocity , acceleration and…
Q: A bullet hits a target 2 cm below its aiming point f the gun is 30 m away from the target, what is
A: horizontal distance = R = 30 m vertical distance = y = 2 cm = 0.02 m
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Q: Calvin throws a ball straight down from the balcony of an apartment building at a velocity of 5.04…
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Q: What would be the final velocity if a 600g Cart 1, initially traveling 5.90m/s collided with a 200g…
A: Given data: Mass of the cart 1 m1=600g=0.6 kg Initial velocity of the cart 1 v1=5.90 m/s Mass of the…
Q: A train is travelling with a velocity of 90 km/h. The brakes are applied at a rate of -0.4 m/s?.…
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Q: A 1.5 kg rocket is shot from the ground with an initial velocity of 50 m/s. How high does go before…
A:
Q: speed by a h the horizor between bl
A: work done=FScosθ
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- (a) At what speed would a 2.00104 -kg airplane have to fly to have a momentum of 1.60109kgm/s (the same as the ship's momentum in the problem above)? (b) What is the plane's momentum when it is taking off at a speed of 60.0 m/s? (c) If the ship is an aircraft carrier that launches these airplanes with a catapult, discuss the implications of your answer to (b) as it relates to recoil effects of the catapult on the ship.(a) What is the mass of a large ship that has a momentum of 1.60109kgm/s, when the ship is moving at a speed of 48.0 km/h? (b) Compare the ship's momentum to the momentum of a 1100-kg artillery shell fired at a speed of 1200 m/s.A ball of mass 250 g is thrown with an initial velocity of 25 m/s at an angle of 30 with the horizontal direction. Ignore air resistance. What is the momentum of the ball after 0.2 s? (Do this problem by finding the components of the momentum first, and then constructing the magnitude and direction of the momentum vector from the components.)
- a man of mass m1 = 70.0 kg is skating at v1 = 8.00 m/s behind his wife of mass m2 = 50.0 kg, who is skating at v2 = 4.00 m/s. Instead of passing her, he inadvertently collides with her. He grabs her around the waist, and they maintain their balance. (a) Sketch the problem with before-and-after diagrams, representing the skaters as blocks. (b) Is the collision best described as elastic, inelastic, or perfectly inelastic? Why? (c) Write the general equation for conservation of momentum in terms of m1, v1, m2, v2, and final velocity vf. (d) Solve the momentum equation for vf. (e) Substitute values, obtaining the numerical value for vf, their speed after the collision.A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.5 g, which includes fuel mass of 12.7 g. The duration of its burn is 1.90 s. (a) What is the average exhaust speed of the engine? (b) This engine is placed in a rocket body of mass 53.5 g. What is the final velocity of the rocket if it were to be fired from rest in outer space by an astronaut on a space-walk? Assume the fuel burns at a constant rate.A wooden block of mass M rests on a table over a large hole as in Figure P9.39. A bullet of mass m with an initial velocity of vi is fired upward into the bottom of the block and remains in the block after the collision. The block and bullet rise to a maximum height of h. (a) Describe how you would find the initial velocity of the bullet using ideas you have learned in this chapter. (b) Find an expression for the initial velocity of the bullet. Figure P9.39 Problems 39 and 40.
- The figure below shows a bullet of mass 200 g traveling horizontally towards the east with speed 400 m/s, which strikes a block of mass 1.5 kg that is initially at rest on a frictionless table. After striking the block, the bullet is embedded in the block and the block and the bullet move together as one unit. a. What is the magnitude and direction of the velocity of the block/bullet combination immediately after the impact? b. What is the magnitude and direction of the impulse by the block on the bullet? c. What is the magnitude and direction of the impulse from the bullet on the block? d. If it took 3 ms for the bullet to change the speed from 400 m/s to the final speed after impact, what is the average force between the block and the bullet during this time?A pitcher claims he can throw a 0.145-kg baseball with as much momentum as a 3.00-kg bullet moving with a speed of 1.50 103 m/s (a) What must the baseballs speed be if the pitchers claim is valid? (b) Which has greater kinetic energy, the ball or the bullet?A billiard player sends the cue ball toward a group of three balls that are initially at rest and in contact with one another. After the cue ball strikes the group, the four balls scatter, each traveling in a different direction with different speeds as shown in Figure P10.30. If each ball has the same mass, 0.16 kg, determine the total momentum of the system consisting of the four balls immediately after the collision. FIGURE P10.30
- a man of mass m1 = 70.0 kg is skating at v1 = 8.00 m/s behind his wife of mass m2 = 50.0 kg, who is skating at v2 = 4.00 m/s. Instead of passing her, he inadvertently collides with her. He grabs her around the waist, and they maintain their balance. (a) Sketch the problem with before-and-after diagrams, representing the skaters as blocks. (b) Is the collision best described as elastic, inelastic, or perfectly inelastic? Why? (c) Write the general equation for conservation of momentum in terms of m1, v1, m2, v2, and final velocity vf. (d) Solve the momentum equation for vf. (e) Substitute values, obtaining the numerical value for vf, their speed after the collision.An estimated force-time curve for a baseball struck by a bat is shown in Figure P9.13. From this curve, determine (a) the magnitude of the impulse delivered to the ball and (b) the average force exerted on the ball. Figure P9.13