HB_P_MFW_1

The number of complete oscillations executed by the bob in one second is called its

• Frequency
• Period
• Amplitude
• Vibration

If a body is moving with uniform velocity, its acceleration stays

• Uniform
• Positive
• Negative
• Zero

A man runs 20 km in 15 mins. What is his speed?

• 20 km/hr
• 80km/min
• 20 km/min
• 80 km/hour

Which of the following force is the strongest force of attraction?

• Muscular
• Gravitational
• Nuclear
• Magnetic

Who invented spring balance?

• Robert Hooke
• Galileo
• Newton
• Rutherford

Who has proved that the objects of different masses fall to the ground together?

• Chadwick
• Galileo
• Newton
• James Watt

Which of the following does not help to reduce friction?

• Soapy Water
• Oil
• Grease
• Sand

Frictional force is a

• Force that opposes motion
• Contact force
• Both a and b (Both Option 1 and Option 2)
• Force at a distance

Rate of change of momentum is directly proportional to

• Accelearation
• Velocity
• Mass
• Force

If mass is constant, Velocity is doubled then Kinetic energy will

• Remain constant
• Increase 2 times
• Increase 4 times
• become zero