حرکیات اور قوت

Newton's first law of motion is also called the law of:

• 1 Gravitation
• 2 Acceleration
• 3 Momentum transfer
• 4 Inertia

What force is needed to give a mass of 5 kg an acceleration of 3 m/s2?

• 1 8 N
• 2 1.7 N
• 3 15 N
• 4 2 N

What is the SI unit of momentum?

• 1 kg m/s2
• 2 N
• 3 J
• 4 kg m/s

When a gun fires a bullet, the gun recoils. This is explained by:

• 1 Newton's second law
• 2 Newton's first law
• 3 Newton's third law
• 4 Law of gravitation

What is the weight of a 10 kg mass on Earth? (g = 10 m/s2)

• 1 10 N
• 2 1 N
• 3 100 N
• 4 0.1 N

The force that opposes the motion of one surface over another is called:

• 1 Thrust
• 2 Friction
• 3 Tension
• 4 Gravity