If a projectile is fired straight up at a speed of 30 m/s, the total time to return to its starting point is about

Q: For a freely falling object, the acceleration and the speed To double the time of fall, the height…

A: Freely falling objects are those objects which fall under the influence of gravity.

Q: A Napoleon cannon has a muzzle velocity of 450 m/s. If the cannon is fired at an elevation of 5.1°,…

A: muzzle velocity (v) = 450 mslaunch angle (θ) = 5.1o

Q: A ball is kicked straight up from ground level at a velocity of 13m/s. Find the ball’s velocity just…

A: Given: The initial velocity of the ball is 13 m/s. The level of the initial position and final…

Q: The motion of a freely falling body is an example of ________________________ motion. A) uniformly…

A: The velocity under a free fall is given as v=2gh From the above expression we can say that the…

Q: A projectile is launched vertically. At the time it reaches maximum height: its velocity is at a…

A: Required : Velocity of the ball launched vertically at the highest point.

Q: A ball is dropped from the top of a building 150m high, at the same instant another is thrown upward…

A: The second equation of motion is  s= u t + 0.5 at2 where, s is the distance, u is the initial…

Q: A particle travels along a curved path between two points A and B as shown below. The displacement…

A: solution as

Q: After firing, the velocity of the rifle (relative to the ground) is:

A: Using concept o conservation of linear momentum MU  +mu= MV+ mv M= mass of gun= 6.1kg m= mass of…

Q: A ball thrown horizontally from the top of a building hits the ground in 0.4 s. If it had been…

A: Given case 1Ball hits the ground in ,t=0.4 s (Time of flight)

Q: a certain handgun with a muzzle velocity of 325 m/s is fired straight up. neglecting air resistance,…

A: Initial velocity of bullet (u) = 325 m/sTo find : time taken by the bullet to fall back to the head…

Q: The initial velocity of a ball is 20i + 25j meters per second. Determine the speed of the baseball…

A: Given data The ball's  initial velocity is: u = (20 i+ 25 j ) m/s   The x-component of the velocity…

Q: A marble rolling at a speed of 2.71 m/s falls of the end of a table that is 1.25 m high. How far…

A: y=uyt+0.5gt21.25 m=0 m/st+0.59.8 m/s2t2t=0.505 s Thus, the time taken by ball to land the ground is…

Q: A well hit golf ball is struck off the tee at a speed of 200 mph. If struck at an angle of 45°, how…

A: Given : initial speed of ball = 200 mile/hr              Angle = 45 deg To find : how far ball…

Q: an arrow is shot vertically upward with a speed of 34 m/s and 4 seconds later another arrow is shot…

A: Let us call the first arrow A and the second arrow B. The distance traveled by A in 4 sec is: The…

Q: A baseball is thrown horizontally at 18 m/s from a height of 5.5 m. How far will it travel before…

A: Given that,

Q: A book is knocked off a bench and falls vertically to the floor. If the book takes 1.0s to fall o…

A: *We'll answer only the first three sub-parts since the sub-parts to be answered were not specified.…

Q: When the velocity of the moving body is non-zero, its acceleration must be non-zero also.True or…

A: Given that the velocity of the moving body is non-zero. To discuss that body acceleration must be…

Q: thrown vertically downward from the edge of a bridge 28.0 m high with an initial speed of 13.0 m/s.…

A: Let upward is positive direction and downward is negative direction. Given Initial velocity u = -13…

Q: A man at the top of a tower throws an object horizontally whereas he simply drops another.Will these…

A: Yes the object will reach the Earth at the same time.

Q: Doubling the mass of the ball used in the Projectile Motion experiment would cause it to strike the…

A: Given:- Doubling the mass of the ball used in the Projectile Motion experiment would Find:- cause…

Q: A player kicks a soccer ball in a high arc toward the opponent's goal. At the highest point in its…

A: Here the option (b) . i.e neither the ball's velocity nor its acceleration are zero.

Q: A bullet is fired horizontally from a gun. At the same time a similar bullet is dropped from the…

A: Ans:- Image-1

Q: The initial speed of a projectile fired upwards from ground level is 20 m/s, what its maximum…

A:

Q: A car has a velocity of 30m/s to the right. The driver applies the brakes, slowing the car to a stop…

A:

Q: Iron man started falling to the earth upon using up all the fuel from his booster packs. From the…

A:

Q: 9T.3 A tennis ball is dropped from rest at the exact same instant and height that a bullet is fired…

A: Given that, a bullet is fired horizontally, and at the same instant a second bullet is dropped from…

Q: if the initial speed of a ball thrown horizontally were doubled, the horizontal distance or range is

A: Answer:-  We know that  Range (R) = (u2 sin2A)/g  Therefore  R is directly proportional to u2  By…

Q: A kangaroo jumps straight up to a vertical height of 1.15 m How long was it in the air before…

A: From kinematics,

Q: A downward-moving skydiver is falling with a constant speed.

A:

Q: A ball was thrown vertically upward with initial velocity of 25 m/s. When the ball reaches the…

A:

Q: An object is said to be moving at constant velocity if a. Its speed is constant b. Its direction as…

A: An object is said to be moving at constant velocity,

Q: A stone is thrown horizontally by Gabby with an initial speed of 25 m/s from a bridge. Assuming that…

A: Given data *The initial speed of the stone is u = 25 m/s *The given height is H = 87 m

Q: A car moves 5m away from its initial position. Its displacement is 5m Speed is a vector quantity…

A: In this question we have to answer which statements are true or false. Please give positive feedback…

Q: If raindrops fall vertically at a speed of 3 m/s and you are running horizontally at 4 m/s, convince…

A: The expression for the speed of the rain drop is,

Q: maximum height

A:

Q: A lead ball is dropped into a lake from a diving board 6.20 m above the water. After entering the…

A:

Q: A particle falls from rest and in the last second of its motion it passes 70 m. Find the height from…

A: Given: The height covered by the particle in the last second is 70 m.

Q: A book slides horizontally off a shelf 2.8 meters above the floor, at a velocity of 0.25 m/s.  How…

A: Firstly time to cover the vertical distance of 2.8 m will be calculated. Initially vertical velocity…

Q: A lead ball is dropped into a lake from a diving board 6.20 m above the water. After entering the…

A:

Q: An object is thrown vertically upward with a certain initial velocity in a world where the…

A:

Q: At the maximum height of a body thrown vertically up: (A) velocity is not zero but acceleration is…

A: When body is thrown vertically thrown upward then its velocity is zero at maximum height and…

Q: What is the acceleration of a projectile when it reaches its highestpoint?

A: Acceleration: The term acceleration in physics can be defined as the rate of change in the velocity…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –