Question 4: What type of motion occurs when unequal distances are covered in equal time intervals?
a) Uniform motion
b) Constant velocity
c) Non-uniform speed
d) Accelerated motion
Answer: c) Non-uniform speed
Question 5: What is the difference between speed and velocity?
a) Speed is a scalar quantity, while velocity is a vector quantity.
b) Speed is measured in m/s, while velocity is measured in cm/s.
c) Speed is the magnitude of velocity.
d) Speed and velocity are the same thing.
Answer: a) Speed is a scalar quantity, while velocity is a vector quantity.
Question 6: When an object moves with constant speed along a circular path, what type of motion is it?
a) Linear motion
b) Non-uniform motion
c) Uniform circular motion
d) Decelerated motion
Answer: c) Uniform circular motion
Question 7: What is the rate of change of momentum proportional to?
a) Acceleration
b) Velocity
c) Force applied
d) Mass
Answer: c) Force applied
Question 8: What is the SI unit of force?
a) Newton
b) Dyne
c) Joule
d) Kilogram
Answer: a) Newton
Question 9: What is momentum?
a) The product of force and time
b) The product of mass and velocity
c) The product of displacement and time
d) The product of acceleration and mass
Answer: b) The product of mass and velocity
Question 10: When an object’s velocity increases with time, what type of acceleration does it have?
a) Negative acceleration
b) Zero acceleration
c) Uniform acceleration
d) Positive acceleration
Answer: d) Positive acceleration
Question 11: What does the rate of change of momentum depend on?
a) Mass of the object only
b) Velocity of the object only
c) Both mass and velocity of the object
d) Time elapsed
Answer: c) Both mass and velocity of the object
Question 12: What is the unit of momentum in the CGS system?
a) g cm/s
b) kg m/s
c) N m/s²
d) cm/s²
Answer: a) g cm/s
Question 13: Which property was introduced by Newton to describe the effect of force on an object?
a) Speed
b) Distance
c) Velocity
d) Momentum
Answer: d) Momentum
Question 14: What is the effect of an unbalanced force on an object’s momentum?
a) It increases the momentum.
b) It decreases the momentum.
c) It doesn’t affect the momentum.
d) It changes the direction of the momentum.
Answer: b) It decreases the momentum.
Question 15: What is the displacement that occurs in unit time called?
a) Speed
b) Velocity
c) Acceleration
d) Distance
Answer: b) Velocity
