Jamb Physics 1997 Past Questions and Answers

Question 6:

• JAMB 1997

Two bodies X and Y are projected on the same horizontal plane, with the same initial speed but at angles 30 and 60 respectively to the horizontal. Neglecting air resistance, the ratio of the range of X to that of Y is

A. 1:1
B. 1:2
C. √3:1
D. √3

Question 7:

• JAMB 1997

Which of the following with respect to a body performing simple harmonic motion are in phase?

A. Displacement and velocity of the body
B. Displacement and force on the body
C. Velocity and acceleration of the body
D. Force acting on the body and the acceleration

Question 8:

• JAMB 1997

A body of mass 2kg moving vertically upwards has its velocity increased uniformly from 10ms^-1 to 40ms^-1 in 4s. Neglecting air resistance, calculate the upward vertical force acting on the body.[g = 10 ms^-1]

A. 15N
B. 20N
C. 35N
D. 45N

Question 9:

• JAMB 1997

A planet has mass m₁ and is at a distance r, from the sun. A second planet has mass m₂ = 10m₁ and at a distance of r₂ = 2r₁ from the sun. Determine the ratio of the gravitational force experienced by the planets.

A. 1 : 5
B. 2 : 5
C. 3 : 5
D. 4 : 5

Question 10:

• JAMB 1997

An object of mass 100g projected vertically upwards from the ground level has a velocity of 20ms^-1 at a height of 10m. calculate its initial kinetic energy at the ground level.[g = 10ms^-2, neglect air resistance]

A. 10 J
B. 20 J
C. 30 J
D. 50 J