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1286
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
View Answer & Discuss (8) JAMB 1997
1287

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
View Answer & Discuss (16) JAMB 1997
1288
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
View Answer & Discuss (11) JAMB 1997
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1289
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
View Answer & Discuss (13) JAMB 1997
1290

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
View Answer & Discuss (35) JAMB 1997
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