SPH3U
1
1-d Dynamics Problems
A block of mass 5.0 kg is suspended vertically by a string with a tension of 30.0 N. Find
the acceleration of the block, assuming it is located on earth.
2 The space shuttle has a mass of 2.0 x 106 kg and is launched from the earth’s surface. It
reaches a velocity of 75.0 m/s at a time of 5.0 s after the launch. Find the acceleration
of the shuttle and the thrust provided by the rocket engines during the launch.
3 A car with a mass of 1500 kg starts from rest and accelerates over a distance of 1.0 km
in a time of 50.0 s. If the car has a force of 1800 N in the forward direction, find the
force of friction retarding the motion of the car.
4 A student with a mass of 50.0 kg is riding an elevator standing on a scale. If the reading
on the scale is 7.0 x 102 N, find the acceleration of the elevator.