Newton's Laws

A 19 kg box is lying on a frictionless surface. How far will the box travel in 2.7 s if a constant net force of 18 N is applied?

• 2.6 m

• 0.95 m

• 6.9 m

• 130 m

• 3.5 m

If a boat sails north, in what direction will the friction be?

• up

• south

• west

• east

What is the force of sliding friction between a block and the ground if μ_k is 0.26 and the block weighs 27 N?

• 1.8 N

• 190 N

• 7.0 N

• 27 N

• 1.0 x 10² N

What is the acceleration due to gravity on Planet X if someone who weighs 1400 N on Earth weighs 2200 N on Planet X?

• 9.8 m/s²

• 140 m/s²

• 220 m/s²

• 15 m/s²

• 6.2 m/s²

Which law if also known as the Law of Inertia?

• 1st Law

• 2nd Law

• 3rd Law

• 4th Law

• Law of Universal Gravitation

In the Crash Course video, she talked about Newton's Laws and a holiday. Which law and symbol was being discussed?

• 1st Law and Reindeer

• 3rd Law and Reindeer

• 2nd Law and Easter Bunny

• 3rd Law and Easter Bunny

• 2nd Law and the Great Pumpkin

An 8.9 kg box is moving at 18 m/s on a frictionless plane. When will it stop?

• 160 s

• 27 s

• 0.49 s

• 2.0 s

• never

What is the net force required to accelerate a 17 kg box at a rate of 2.6 m/s²?

• 6.5 N

• 0.15 N

• 170 N

• 2.0 x 10¹ N

• 44 N

How much would a 130 kg man weigh near the photosphere of the Sun where the acceleration due to gravity is 274 m/s²?

• 16900 N

• 1270 N

• 13000 N

• 0.474 N

• 35600 N

What is the mass of an object that weighs 720 N on Earth?

• 150 kg

• 73 kg

• 360 kg

• 7100 kg

• 33 kg