Exercise:
A 30 kg object is supported from a rope, such that tension in the rope is equal to its weight. The weight of the object is . . . . .
a) 30 kg
b) 9.8 N/kg
c) 294 N
d) 30 N
Force needed to produce an acceleration of 10 m/s2 in a ball of m ass 0.5 kg is . . . . . . .
a) 20 N
b) 10.5 N
c) 9.5 N
d) 5 N
Ball A collides with ball B which is at rest, after collision which of the following condition is not possible?
a) ball A comes to rest and ball B starts moving
b) both balls move in the same direction
c) both balls move in the opposite direction
d) both balls are at rest
What
is the mass of a car that is travelling with a velocity of 20 m/s [W] and a
momentum of 22000 kg m/s [W]?
a) 440000 kg
b) 21980 kg
c) 22020 kg
d) 1100 kg
An
object at earth and taken to moon should have
a) less mass/less weight
b) same mass/more weight
c) same mass/less weight
d) less mass/same weight
