Classes are canceled due to snow, so you take advantage of the extra time to conduct some physics experiments. You fasten a large toy rocket to the back of a sled and take the modified sled to a large, flat, snowy field. You ignite the rocket and observe that the sled accelerates from rest in the forward direction at a rate of 12.5 m/s2 for a time period of 3.50 s. After this time period, the rocket engine abruptly shuts off, and the sled subsequently undergoes a constant backward acceleration due to friction of 5.65 m/s2

Q: A man drops a pumpkin off of the top of a 100. m tall building.  a) How long will it take to drop…

A:

Q: A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.5 m/s 2. The driver…

A: A car starts from rest(u=0)and travels for 5.0 s (t=5)with a uniform acceleration(a) of +1.5 m/s2,…

Q: A college student wants to toss a textbook to his roommate who is leaning out of a window directly…

A:

Q: An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s…

A:

Q: An object is moving to the right with a constant acceleration pointing to the left. The velocity of…

A:

Q: Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives…

A: a) The time required is,

Q: A ball is tossed with enough speed straight up so that it is in the air several seconds. (a) What is…

A:

Q: (a) Calculate the height of a cliff if it takes 2 s for a rock that falls off the cliff to hit the…

A:

Q: A certain elevator cab has a total run of 206 m and a maximum speed is 308 m/min, and it accelerates…

A: Initial velocity (u) = 0 msacceleration (a) = 1.16 ms2maximum velocity (v) = 308 mmin

Q: To study damage to aircraft that collide with large birds, you design a test gun that will…

A:

Q: An express train passes through a station. It enters with an initial velocity of 22.0 m/s and…

A: given: enters with velocity u =22.0 m/s deceleration a =0.15 m/s2 length of station s =210 m

Q: A bug crawls across a large window. The position of the bug is given by to following equation: x(t)…

A:

Q: (a) How far is the train in first 30sec? (b) What is the average velocity of the train for the…

A:

Q: A bus is traveling with a uniform velocity of 20 m/s. At the instant it passes a car at rest, the…

A: Uniform velocity of bus (u) = 20 m/s Initial velocity of car (u') = 0 m/s Acceleration of bus (a) =…

Q: An automobile and a truck start from rest at the same instant, with the automobile  initially at…

A:

Q: An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s…

A: (a) From kinematics, the formula for the final velocity of the player be:

Q: A motorist drives north for 35.0 minutes at 85.0 km/h and then stops for 15.0 minutes. He then…

A: Given : Time (t1) = 35 min = 35/60 = 0.5833 h Velocity (v1) = 85 km/h Time (t2) = 15 min = 15/60 =…

Q: Two cars are traveling along a straight-line in the same direction, the lead car at 25.0 m/s and the…

A: (a) From kinematics, the expression for the velocity in terms of time is:

Q: A stone is falling vertically downward from a tall building of height 120m. (a) How much time it…

A:

Q: cat walks in a straight line, which we shall call the x-axis with the positive direction to the…

A:

Q: An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s…

A: Answer is uploaded in the 2nd step

Q: A baseball leaves a pitcher’s hand horizontally at a speed of 161 km/h.The distance to the batter is…

A: Since there are multiple sub-parts posted, we will answer the first three sub-parts for you. If you…

Q: n athlete runs around a 400 m race track four times. It takes 400 s to complete his run. A. What is…

A: Given ... Length of track = 400 m  Total time taken ,T = 400 sec  Athlete runs track 4 times ...

Q: A motorist traveling at 45 km/h applies the brake so that the car decelerates uniformly at 4.0 m/s2.…

A:

Q: 2. A jet landing on an aircraft carrier comes in on solid ground with a speed of 100 m/s, and its…

A: (a) Given The initial speed of the jet is u=100 m/s. The magnitude of the acceleration of the jet…

Q: The position of a toy car driving on a horizontal surface is given by x = 4.0m - (2.0m/s)*t +…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 1. A dog and a cat ran a race of distance 30 km. In the trail for the race, the dog had an average…

A: Hello. Since you have posted multiple questions, we will solve the first question for you. If you…

Q: Part A.) What is the final velocity, in meters per second, of a freight train that accelerates at a…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: The position of an object is x(t) = (t^2)(e^-t) where t≥ 0. Answer the following questions. a) Make…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: I understand the first part just stuck on the second part. Thank you.

A: (a)The motion of the car can be split into two parts, first the uniform accelerated motion and then…

Q: A jet plane lands with a speed of 88 m/s and can accelerate at a maximum rate of -4.30 m/s? as it…

A: Given data: Initial velocity (v0) = 88 m/s Acceleration (a) = -4.30 m/s2 Final velocity (v) = 0 m/s,…

Q: A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of…

A:

Q: A typical sneeze expels material at a maximum speed of 55.4 m/s. Suppose the material begins inside…

A:

Q: A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.1 m/s2. The driver…

A:

Q: An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s…

A: Given data:  Initial velocity (Vi) = 6.50 m/s Final velocity (Vf ) = 0 Compression (x) = 0.350 m

Q: An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s…

A: First find the deceleration (b) Write equation of motion for motion with constant deceleration to…

Q: The graph of s = f(t) represents the position of an object moving along a line at time t20. a.…

A: To determine: Values of t for which the velocity of the object zero. The object's direction. Graph…

Q: A rock is dropped from a height of 882 feet and falls toward Earth in a straight line. In t seconds…

A: "Since you have posted a question with multiple sub parts, we will solve first three sub parts for…

Q: (a) What is the maximum height this rocket will reach above the launch pad? (b) How much time will…

A:

Q: A model rocket is launched from the ground at rest. The acceleration of the rocket is ?⃗ = 90 ?̂ ? ?…

A:

Q: A bullet 2.50 cm long is fired at 450 m/s and passes straight through a 12.0 cm thick board, exiting…

A: Given Bullet length= 2.5 cm= 0.025m Thickness= 0.12m initial velocity= 450m/s final velocity= 275m/s…

Q: A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of…

A:

Q: E A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same…

A:

Q: A 3.0 Mg car going at 18 m/s collides with a 6.0 Mg truck at rest. The collision is totally…

A: The given data are: m1=3 Mgu1=18 m/sm2=6 Mgu2=0 m/st=500 ms=0.5 s

Q: A brick is released with no initial speed from the roof of a building and strikes the ground in 2.50…

A:

Q: A jet plane lands with a speed of 100 m/s and can accelerate at a maximum rate of -5.00 m/s as it…

A: