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Physics 1998 JAMB Past Questions

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6

A ball of mass 0.15kg is kicked against a rigid vertical wall with a horizontal velocity of 50ms-1. If it rebounced with a horizontal velocity of 30ms-1, Calculate the impulse of the ball on the ball · ·

  • A. 3.0Ns
  • B. 4.5Ns
  • C. 7.5Ns
  • D. 12.0Ns
View Answer & Discuss (17) JAMB 1998
7
The force of attraction between two point masses is 10-4N when the distance between them is 0.18m. If the distance is reduced to 0.06m, calculate the force.
  • A. 1.1 x 10-5N
  • B. 3.3 x 10-5N
  • C. 3.0 x 10-4N
  • D. 9.0 x 10-4N
View Answer & Discuss (4) JAMB 1998
8

A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule?

  • A. 95cm
  • B. 25cm
  • C. 20cm
  • D. 5cm
View Answer & Discuss (22) JAMB 1998
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9
A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the staircase.[g = 10ms-2]
  • A. 1.8m
  • B. 2.0m
  • C. 2.5m
  • D. 3.0m
View Answer & Discuss (3) JAMB 1998
10
A parachute attains a terminal velocity when
  • A. its density is equal to the density of air
  • B. the viscous force of the air and the upthrust completely counteract its weight
  • C. it expands as a result of reduced external pressure
  • D. the viscous force of the air is equal to the sum of the weight and upthrust
View Answer & Discuss (7) JAMB 1998
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