Astronauts who landed on the moon during the Apollo 15, 16 and 17 missions brought back a large collection of […]

# Mechanics: Dynamics

A snowboarder starts from rest at the top of a double black diamond hill. As he rides down the slope, […]

## A snowboarder starts from rest at the top

If a particle has an initial velocity of ft/s to the right, at , determine its position when s, if […]

## If a particle has an initial velocity

If it takes 3 s for a ball to strike the ground when it is released from rest, determine the […]

## If it takes 3 s for a ball to strike ...

A bicyclist starts from rest and after traveling along a straight path a distance of 20 m reaches a speed […]

## A bicyclist starts from rest and after traveling

A stone A is dropped from rest down a well, and in 1 s another stone B is dropped from […]

## A stone A is dropped from rest down a well

A bus starts from rest with a constant acceleration of 1 m/. Determine the time required for it to attain […]

## A bus starts from rest with a constant acceleration

Traveling with an initial speed of 70 km/h, a car accelerates at 6000km/ along a straight road. How long will […]

## Traveling with an initial speed of

From approximately what floor of a building must a car be dropped from an at-rest position so that it reaches […]

## From approximately what floor of a building

When a train is traveling along a straight track at 2 m/s, it begins to accelerate at (60 ) m/ […]

## When a train is traveling along a straight track

A baseball is thrown downward from a 50-ft tower with an initial speed of 18 ft/s. Determine the speed at […]