Range
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- The force with which he pushes the ground and his speed
- Speed before he jumps and his weight
- The direction in which he leaps and the initial speed
- None of these
A ball is thrown from ground level of a field with a speed of 12.0 m/s at an angle of 45∘ with the horizontal. At what distance will it hit the field again? Take g = 10.0 m/s2.
Angle to destroy ships = 45°; Angle for maximum range = 90°
Angle to destroy ships = 30°; Angle for maximum range = 45°
Angle to destroy ships = 60°; Angle for maximum range = 45°
Angle to destroy ships = 90°; Angle for maximum range = 90°
1.5 km
3.0 km
6 km
0.75 km
Two particles A & B are projected with same speed so that the ratio of their maximum height reached is 3:1. If the speed of A is doubled without altering other parameters, the ratio of their horizontal ranges is
1:1
2:1
4:1
3:2
A projectile fired with initial velocity u at some angle θ has a range R. If the initial velocity be doubled at the same angle of projection, then the range will be
2R
R
R2
4R
An aeroplane moving horizontally with a speed of 720 km/h drops a food pocket, while flying at a height of 396.9 m. the time taken by a food pocket to reach the ground and its horizontal range is (Take g = 9.8 m/sec2)
3 sec and 2000 m
5 sec and 500 m
8 sec and 1500 m
9 sec and 1800 m
Four bodies P, Q, R and S are projected with equal velocities having angles of projection 15∘, 30∘, 45∘ and 60∘ with the horizontal respectively. The body having shortest range is
P
Q
S
R
A particle covers 50 m distance when projected with an initial speed. On the same surface it will cover a distance, when projected with double the initial speed
100 m
150 m
200 m
250 m
Galileo writes that for angles of projection of a projectile at angles (45 + θ) and (45 - θ), the horizontal ranges described by the projectile are in the ratio of (if θ < 45)
1 : 1
1 : 2
2 : 3
2 : 1