67. i a 200 kg weather rocket is loaded with 100 kg of fuel and
fired straight up. it accelerates upward at 30.0 m/s2 for 30.0 s,
then runs out of fuel. ignore any air resistance effects.
a. what is the rocket's maximum altitude?
b. how long is the rocket in the air?
c. draw a velocity-versus-time graph for the rocket from liftoff
until it hits the ground.

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p