Forces

A ball has a mass of 30 grams. It also has an acceleration of 21 m/s. What is its force?

• 600N

• 630N

• 0.67N

• 15N

Emma and her car have a combined mass of 630g. Her acceleration is 19 m/s. How much force acting on them?

• 11,970N

• 12,000N

• 33N

• 649N

A car has a mass of 1,600g. What is its force, if it has an acceleration of 12?

• 1,612N

• 133N

• 19,200N

• 20,000N

Tony's car has a force of 400N with an acceleration of 25 m/s. What is its mass?

• 16

• 20

• 10,000

• 0.0625

Amy has a mass of 300 and a force of 4800N. What is her acceleration? 

• 31

• 20

• 17

• 16

Alfred is walking down the street. A wind blows by him and pushes him forward. But he doesn't move because of his tight-grip sneakers. What type of force is this?

• Friction

• Gravity

• Normal

• Applied

A balloon has a normal force of 600N, applied forced of 200N and air resistance of 200N. What is its total force?

• 500

• 600

• 200

• 310

A hiker has an applied force of 300N, a frictional force of 200N, and a normal force of 200N. What is his total force?

• 200

• 100

• 20

• 300

Joy can run a 40 miles in 2 minutes. What is her speed in miles per second?

• 0.33

• 0.66

• 3

• 2

A man walks 20 km in 4 hours. Find his speed.

• 3

• 4

• 16

• 5