Practice Problems

Make sure to enter your answers in the specified units .
What acceleration will be produced by a force of newtons which is acting on a 5.6 kilogram mass? Express your answer in m/sec2.

How long will a force of newtons have to act on a 10 kilogram mass to change its velocity from 5 m/s to 8 m/s? Express your answer in seconds.

A car of mass kilograms is moving at 5.2 m/s. What is the magnitude of the force needed to bring it to rest in 3.5 seconds? Express your answer in newtons.

What is the weight of the car in problem 3? Express your answer in newtons.

A toy train car of mass 3.0 kilograms is moving at m/s when it collides with another car of mass 4.0 kilograms which is at rest. After the collision they lock and move together. Find the common final speed. Express your answer in m/s.

Once you have submitted your answers for grading by clicking the grade button, you cannot resubmit answers for the same Problem Set--you must use the 'New Problems' button first.
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