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(c) 60°
(d) π/30 πrad/s
(b) 80 m
(b) 1/√2 m/s² towards north-west
(b) K/2
The angle between the vectors (i + j) and (j+ k) is
(c) 60°
(c) 60°
See lessThe angular velocity of seconds hand of a watch is
(d) π/30 πrad/s
(d) π/30 πrad/s
See lessA body dropped from top of tower falls through 60 m during the last 2 seconds of its fall. The height of tower is (g = 10 m/s²)
(b) 80 m
(b) 80 m
See lessA particle is moving eastwards with a velocity of 5 m/s. In 10s, the velocity changes to 5 m/s north words. The average acceleration in this time is
(b) 1/√2 m/s² towards north-west
(b) 1/√2 m/s² towards north-west
See lessIf K is the kinetic energy of a projectile fired at an angle 45°, then what is the kinetic energy at the highest point.
(b) K/2
(b) K/2
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