Jamb Physics 2010 Past Questions and Answers

Question 36:

• JAMB 2010

Two cars moving in the same direction have speeds of 100 kmh^-1 and 130 kmh^-1 what is the velocity of the faster car as measured by an observer in the slower car?

A. 30 kmh^-1
B. 130 kmh^-1
C. 200 kmh[sup][/sup]
D. 230 kmh^-1

Question 37:

• JAMB 2010

A stone and a feather are dropped from the same height above the earth surface. ignoring air resistance, which of the following is correct?

A. The feather will be brown away by the wind while stone will drop steadily
B. The stone and the feather will both reach the ground a the same time
C. The feather will reach the ground first
D. The stone will reach the ground first

Question 38:

• JAMB 2010

A car moves with an initial velocity of 25 ms^-1 and reaches a velocity of 45 ms^-1 in 10s. what is the acceleration of the car?

A. 2 ms^-2
B. 5 ms^-2
C. 20 ms^-2
D. 25 ms^-2

Question 39:

• JAMB 2010

The surfaces of conveyor belts are made rough so as to

A. Protect them while carrying loads
B. Prevent the loads from slipping
C. Enable them to carry more load
D. Make them stronger

Question 40:

• JAMB 2010

A machine of velocity ratio 6 requires an effort of 400 N to raise a load of 800 N through I m. Find the efficiency of the machine

A. 55. 6 %
B. 50.0%
C. 33.3%
D. 22.2%