If (range)² is 48 times (maximum height)², then angle of projection is
Options
(a) 45° (b) 60° (c) 75° (d) 30°
Correct Answer:
30°
Explanation:
No explanation available. Be the first to write […]
A scooter is going round a circular road of radius 100 m at a speed of 10m/s. The angular speed of scooter will be
Options
(a) 0.01 rad/s (b) 0.1 rad/s (c) 1 […]
A body is thrown with a velocity of 9.8 m/s making angle of 30° with the horizontal. It will hit the ground after a time
Options
(a) 1.5 secs (b) 1 sec (c) […]
Two forces of magnitude 8N and 15N respectively act at a point so as to make the resultant force 17N. The angle between the forces is
Options
(a) 120° (b) 90° (c) 45° […]
A body rolls down a stair case of 5 steps. Each step has height 0.1 m and width 0.1 m. With what velocity will the body reach the bottom
Options
(a) 5√2 m/s […]
A body is moving in a vertical circle. The string must remain taut at the highest point. The centripetal acceleration when string is horizontal is
Options
(a) 3g (b) 5g (c) g (d) […]
A bucket full of water is revolved in a vertical circle of 2m. What should be the maximum time period of revolution so that the water does not fall off the bucket?
Options
The maximum and minimum magnitudes of the resultant of two vectors are 17 units and 7 units respectively. If these two vectors are at right angles to each other, the magnitude of their resultant is […]
A projectile is fired at 30°. Neglecting friction, the change in kinetic energy when it returns to the ground will be
Options
(a) zero (b) 30% (c) 60% (d) 100%
Correct Answer:
zero
If A.B=A x B,then the angle between A and B is
Options
(a) 45ﾟ (b) 30ﾟ (c) 60ﾟ (d) 90ﾟ
Correct Answer:
45ﾟ
Explanation:
No explanation available. Be the first to write the explanation […]
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