Question 806:

• JAMB 1995

When a ball rolls on a smooth level ground, the motion of its center is

A. Translational
B. Oscillatory
C. Random
D. Rotational

Question 807:

• JAMB 1995

What is the acceleration due to gravity 'g' on the moon, if g is 10^-2 on the earth?

A. 0. 10 ms^-2
B. 0.74ms^-2
C. 1.6ms^-2
D. 10.00ms^-2

Question 808:

• JAMB 1995

A body is projected from the earth's surface with the intention of letting it escape from the earth's gravitational field. What is the minimum escape velocity of the body? [Earth's radius = 6.4 x 10³km, g = 10ms^-2]

A. 14 kms^-1
B. 13 kms^-1
C. 12 kms^-1
D. 11 kms^-1

Question 809:

• JAMB 1995

A uniform rod PQ of length 1m and mass 2kg is pivoted at the end p. If load of 14N is placed at the center of the rod, find the force that should be applied vertically upwards at Q to maintain the rod at equilibrium horizontally [g = 10ms^-2]

A. 68N
B. 28N
C. 17N
D. 7N

Question 810:

• JAMB 1995

A vehicle of mass m is driven by an engine of power P from rest. Find the minimum time it will take to acquire a speed

A. \(\frac{mv^2}{t}\)
B. \(\frac{mv^2}{2t}\)
C. \(\frac{mv}{t}\)
D. \(\frac{mv}{2t}\)