Physics Past Questions and Answers

What change in velocity would be produced on a body of mass 4kg if a constant force of 16 N acts on it for2 s?

A 0.5 ms^-1
B 2.0ms^-1
C 8.0 ms^-1
D 32.0 ms^-1
E 128.0 ms^-1

Question 242:

Which of the following statements about solid friction is/are correct? I. Friction depends on the nature of the surfaces in contact II. Friction depends on the area of contact III. Friction always acts in the direction of motion.

A I only
B II only
C III only
D I and II only
E I,II and III

Question 243:

A body accelerates uniformly from rest at the rate of 3 ms^-1 for 8 seconds. Calculate the distance covered by the body during the acceleration.

A 12m
B 24m
C 48m
D 72m
E 96m

Question 244:

Which of the following has the same unit as the moment of a force?

A Force
B Power
C Work
D Momentum
E Impulse

Question 245:

Solid weighs 0.040 N in air and 0.024 N when fully immersed in a liquid of density 800 kg m^-3. What is the volume of the solid? (g = 1Oms²)

A 2.0 x 10^-6m³
B 2.5x10^-6m³
C 3.0x10^-6m³
D 2.0x 10^-5m³
E 3.0 x 10^-5m³