A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 140 mi/h in 2.20 s. (a) Find the average acceleration of the plane.  m/s2 (b) Assuming the acceleration is constant, find the distance the plane moves.  m

A certain freely falling object, released from rest, requires 1.25 s to travel the last 25.0 m before it hits the ground. (a) Find the velocity of the object when it is 25.0 m above the ground. (Indicate the direction with the sign of your answer. Let the positive direction be upward.) m/s (b) Find the total distance the object travels during the fall. m

(b) (a) (c) (e) (d) Time, s A ball is dropped from rest at a height of 120 m. +y is defined in the downward direction. Which of the following might be a plot of acceleration versus time? E A C D

A snowboarder on a slope starts from rest and reaches a speed of 2.4 m/s after 7.1 s. (a) What is the magnitude (in m/s2) of the snowboarder's average acceleration? in m/s2 (b) How far (in m) does the snowboarder travel in this time? in m

please help with this one!

A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 79.6 m/s² for 1.82 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude (above the ground) will the rocket reach? +y Maximum altitude a2

A certain freely falling object, released from rest, requires 1.95 s to travel the last 32.0 m before it hits the ground. (a) Find the velocity of the object when it is 32.0 m above the ground. (Indicate the direction with the sign of your answer. Let the positive direction be upward.) m/s (b) Find the total distance the object travels during the fall. m

An object is moving along a straight line in the positive x direction. The graph shows its position from the starting point as a function of time. Various segments of the graph are identified by the letters A, B, C, and D. Which segment(s) of the graph represent(s) a constant velocity of +1.0 m/s? 10 ... B D -10 10 15 20 25 30 time (s) A В C (ur) uopwod B.

Consider a grey squirrel falling from a tree to the ground. Use a coordinate system in which positive is downward for this problem. a) Find the squirrel’s velocity, in meters per second, just before hitting the ground when it falls from a height of 1.3 m. Ignore air resistance.  b) The squirrel softens its landing by bending its legs when it touches the ground, thereby stopping itself over a distance of 7.6 cm. Assuming a constant rate of deceleration, find the squirrel’s acceleration during this process, in meters per second squared.

A train is traveling down a straight track at 35 m/s when the engineer applies the brakes, resulting in an acceleration of −1.0 m/s2 as long as the train is in motion. How far does the train move during a 70-s time interval starting at the instant the brakes are applied? m