Mechanics | Relativity Answers

A 1500.0kg car driving at 15.0m/s[N] strikes a 3500.0kg truck travelling at 25.0m/s[E]. if the cars are tangled together during the collision determine the final velocity of both vehicles.

a roller coaster can travel a maximum speed of 31.0m/s at ground level. Determine the minimum speed the coaster would be travelling at if the highest point of the track is 45.0m off the ground.

A baseball player strikes a ball a 0.145kg ball which reaches a height of 115m, determine the velocity it left the bat at if contact occured at 1.5m off the ground.

a stationary 0.16kg pool ball is struck by a 0.17kg cue ball moving at 2.5m/s, If the cue ball rolls backwards from the point of contact at 0.15m/s what is the final velocity of the pool ball?

A 50.0kg person accelerated from rest to 9.40m/s. Determine the work that must be done to accelerate this person.

Assume that rose has a mass of 63kg and jack has a mass of 75kg. How much do Rose and Jack each way?

A person pushing a lawnmower on a level lawn applies a constant force of 250 N at an

angle θ below the horizontal. If the person’s push does work of 1.06 x 10 4 J on the mower and the mower moves a distance of 44.5 m, what is the angle between the directions of the push and the displacement?

A hydraulic cylinder has a 1 meter stroke. It lifts a 100kg weight in 2 seconds. What is the average power used by the cylinder to perform this work?

A coin lying on a meterstick starts to slide down when one end of the stick is raised 36.4cm above the horizontal. Find The limiting angle for friction and the coefficient of starting friction