Mock test 10 QT

A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is 

• 6 m/s² opposite the motion

• 2 m/s² in the direction of motion

• 8 m/s² opposite the motion

What is the average velocity of the object between 0 and 10 seconds?

• 6.0 m/s

• 1.5 m/s

• -4 m/s

• 0 m/s

What Unit do we Measure Force in?

• Newtons

• Joules

• Volts

• Lumens

F= mass * acceleration

A 20 kg bike accelerates at 10 m/s². what is the force acting upon it?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

An object of mass 10 kg is accelerated upward at 2 m/s². What magnitude of net force is required?

• 20 N

• 2 N

• 5 N

• 0 N

What is the formula for centripetal acceleration in uniform circular motion?

If a wheel completes 10 rotations in 5 seconds, what is the period of rotation?

• 0.5 seconds

• 1 second

• 2 seconds

• 5 seconds

What is the angular speed of an object that makes 20 revolutions in 10 seconds?

If the frequency of rotation of a fan is 60 Hz, what is its period of rotation?

• 1 second

• 60 seconds

If you throw a baseball straight up, what is its acceleration at the highest point?

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s