Steve, alias Rocket man, is propelled upward with an acceleration of 4 g's (1g= 9.8m/s^2) for 7s. After that time, the engine is shut off, and he continues to move upward. What maximum height will he reach?

A particle moving along an x axis has an acceleration of 15.0 m/s2. At t = -2.0 s, the particle's velocity is 11.0 m/s. What is its velocity at t = 6.0 s?

A stone is dropped (from rest) into a deep well. The splash in the water below is heard 4.2 seconds after it is released (when it starts falling from the top of the well). What is the depth of the well? Ignore air resistance and assume the speed of sound is 343m/s

A flashlight is thrown straight up on the Moon at 30.0 m/s. The acceleration due to gravity at the surface of the Moon is 1.62 m/s2, and the Moon has no atmosphere. What is the height of the flashlight when it is coming back down with a speed of 20.0 m/s?

A student launches a small rocket which starts from rest at ground level. At a height h=1.04km, the rocket reaches a speed of vf=391m/s. At that height, the rocket runs out of fuel, so there is no longer any thrust propelling it. After the rocket's engine turns off at a height of h=1.04km, it continues to move upward due to the velocity that it reached. What is the rocket's acceleration, in meters per squared second, during the period from engine shutoff until it returns to the ground? Ignore air resistance.

The NEXT morning, you wake up in a strange room yet again, and this time you drop a ball from a height of 1.54 m above the floor. The ball hits the floor 0.392 s after your drop it. You guess that you must have been taken to an alien planet with gravity different from Earth s. What is this planet s g (that is, the magnitude of the acceleration due to gravity on this planet)?     10.0 m/s^2     15.0 m/s^2     30.0 m/s^2     20.0 m/s^2

A stone is thown from the top edge of a cliff with an initial speed of V0 = 15 m/s . The stone takes 3 seconds to each the bottom. What is the height of the cliff. (air resistance is negligible).

A spacecraft has an initial speed of 3037 m/s at an angle of 27 degrees above the positive x axis. Two engines fire for 5.4 seconds, and produce an acceleration of 9.9 m/s/s at an angle of 18.5 degrees above the positive x axis. What is the final speed of the spacecraft? What angle is it at above the positive x-axis?

The acceleration of a particle is a constant. At t=0 the velocity of the particle is (14.91 + 18.4ĵ) m/s. At t = 4.6 s the velocity is 11.4j m/s. (Use the following as necessary: t. Do not include units in your answers.) (a) What is the particle's acceleration (in m/s²)? = î+ 18.4 v(t) = (b) How do the position (in m) and velocity (in m/s) vary with time? Assume the particle is initially at the origin. r(t) = î+ X Î- i) m/s m/s

A bb is shot downward from the top of a building leaving the barrel with an initial speed of 90.3 m/s downward. The top of the building is 60.1 m above the ground. How much time elapses between the instant it leaves the barrel and the instant of impact with the ground? Round your answer to 3 decimal places.