Physics
Force and Motion
Page 8 of 11
#57 Velocity and acceleration are in the same direction when
A) Velocity of a car is increasing on a straight road
B) Velocity of a car is decreasing on a straight road
C) Car is turning round a corner
D) None of these
#58 When the average velocity of a moving body is equal to its instantaneous velocity then it is moving with
A) Uniform velocity
B) Variable velocity
C) Uniform acceleration
D) Variable acceleration
#59 To a person going east in a car with a velocity of 10 m/s, a train appears to move towards north with a velocity of \(10^3\) m/s. The actual velocity of the train is
A) 10 m/s northeast
B) 10 m/s Northwest
C) 20 m/s Northeast
D) 20 m/s northwest
#60 A ball is projected at 45° and its horizontal range is 10 m. Velocity of projection is
A) 7.37 m/s
B) 15 m/s
C) 9.6 m/s
D) 7.2 m/s
#61 The ratio of distance to magnitude of displacement along a semi-circle of radius r is
A) \(2\pi\)
B) \(\pi\)
C) \(\frac{\pi}{2}\)
D) \(3\pi\)
#62 The ratio of range to height at 45° is
A) 1:4
B) 1:2
C) 4:1
D) 2:1
#63 If \(h = R\) then angle of projection is
A) 45°
B) 76°
C) 60°
D) 90°
Page 8 of 11
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