Newton's Third Law

Newton's 3rd law states that if one object exerts a force on a second object, the second objects exerts an equal and _____ force?

• balanced

• opposite

• unblanced

• inverse

Forces always occur ______.

• In the same direction

• by themselves

• in pairs

A 12 kg rock is sitting on the ground. How much force does the ground exert upwards on the rock?

• 12 N

• 120 N

• 1.2 N

• 0 N

A golf club is swung and impacts a golf ball with a large force. Which additional force results from this interaction?

• Gravity pulling down on the ball

• The ball exerting a force on the club

• The normal force of the ground on the ball

You stand on a scale while holding a 2 kg weight. What is the force the scale exerts on you?

• Your weight (in Newtons)

• Your weight (in Newtons) plus 2 N

• Your weight (in Newtons) plus 20 N

• Your weight (in Newtons) minus 20 N

A raw egg is thrown at a wall and impacts the wall with a force of 10 N. What is the force of the wall on the egg?

• Less than 10 N

• Greater than 10 N

• 10 N

When a bug hits a windshield, the force on the bug and windshield are the same. Why does the bug get squished but the windshield does not?

• The bug has less mass than the windshield.

• The bug applies less friction on the windshield.

• The bug is moving much faster than the windshield.

Which of the following statements is true?

• Equal and opposite forces are always cancelled out.

• Equal and opposite forces depend on the size of the objects.

• Equal and opposite forces do not cancel out because they're on different objects.

Which of the following statements is false?

• When objects collide, the forces on eachother are equal.

• When objects collide, the smaller mass accelerates more than the larger mass.

• When objects collide, larger objects exert bigger forces on smaller objects.