Work-Energy Theorem Practice

A 1.5-kg physics textbook is initially at rest on a steel table. The textbook is then pushed with a constant force of 5.0 N. Friction with a magnitude of 3.0 N is exerted on the moving book by the surface of the table. Use the equations for work and kinetic energy to calculate the final velocity of the textbook after it has been pushed 0.50 meters across the table.

• 0.75 m/s
• 2.00 m/s
• 3.50 m/s
• 1.15 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

A 1.5-kg physics textbook is initially at rest on a steel table. The textbook is then pushed with a constant force of 3.0 N. Friction with a magnitude of 1.8 N is exerted on the moving book by the surface of the table. Use the equations for work and kinetic energy to calculate the final velocity of the textbook after it has been pushed 1.0 meter across the table.

• 2.50 m/s
• 0.75 m/s
• 1.26 m/s
• 1.00 m/s

Tags

NGSS.HS-PS2-1

A 0.20-kg hockey puck initially traveling 5.0 m/s is pushed on ice by a hockey stick with a constant force of 7.0 N over a distance of 8.0 m. Friction is negligible. Determine the final velocity of the hockey puck.

• 24.2 m/s

• 15.0 m/s
• 10.5 m/s
• 18.2 m/s

Tags

NGSS.HS-PS2-1

A 0.095-kg dodge ball is traveling at 22 m/s along the concrete ground. Friction with a magnitude of 0.75 N is exerted on the moving ball by the surface of the concrete. Someone also uses their foot to slow the motion of the ball to a stop. If the ball travels 0.20 m before stopping, determine the amount of force applied to the ball by the foot.

• 114.20 N

• 90.00 N
• 75.00 N
• 50.00 N

Tags

NGSS.HS-PS2-1

A box weighing 140 kg at rest on a belt of rollers is given a push of 200N by a constant force over a distance of 1.25m. It is opposed by friction with a constant magnitude of 8N. What is the velocity of the box after the push is complete?

• 3.20 m/s
• 5.00 m/s
• 1.85 m/s
• 0.75 m/s

Tags

NGSS.HS-PS2-1

A box weighing 140 kg at rest on a belt of rollers is given a push of 200N by a constant force over a distance of 1.25m. It is opposed by friction with a constant magnitude of 8N. After what distance will the box come to a stop?

• 5.5 m
• 12.3 m
• 22.1 m
• 30.1 m

Tags

NGSS.HS-PS2-1