Laws of Motion

Draw Acceleration vs Mass graph , when force is constant.

Answer explanation

The graph has negative slope.

Newton's Law of Inertia describes the motion of-

• Objects at rest only
• Objects in motion only
• Objects at rest and objects that are in motion
• Objects without a mass and resist being set into motion

When the air is released from a balloon, the air moves in one direction, and the balloon moves in the opposite direction. Which law best explains the motion of the balloon?

• Newton's Law of Inertia
• Newton's Law of F=ma
• Newton's Law of Force Pairs
• Newton's Law of Biology

Which law best explains how objects accelerate when a force is applied?

• Newton's Law of Inertia
• Newton's Law of F=ma
• Newton's Law of Force Pairs
• Newton's Law of Chemistry

Which law best explains why the boat moves in the opposite direction that Sally moves as she jumps to shore?

• Newton's Law of Inertia
• Newton's Law of F=ma
• Newton's Law of Force Pairs
• Newton's Law of Chemistry

Based on Newton's Law of Force Pairs, what would be the reaction force, if the action force is 60 N to the right?

• 60 N to the right
• 60 N to the left
• 30 N to the left
• 9.8 N to the right

On Which law does a Rocket Work?

• 1st Law

• 2nd Law

• 3rd Law

• Conservation of energy

Calculate the velocity of a car of mass 600 kg and its momentum is 0.025 kgms^-1 .

• 4x 10^-5

• 4x 10^-6

• 0.4

• 0.15

In Equilibrium state, tension in a string is equal to .....................

The atmosphere is held to the earth by

• wind

• gravity

• clouds

• Earth's magnetic field