A cricketer can throw a ball to a maximum horizontal distance of 100m . With the same
effort, he throws the ball vertically upwards. The maximum height attained by the ball is
1. 100m
2. 80m
3. 60m
4. 50m
A boy aims a gun at a bird from a point, at a horizontal distance of 100m. If the gun can impart a velocity of to the bullet. At what height above the bird must he aim his gun in order to hit it (take )
1. 20cm
2. 10cm
3. 50 cm
4. 100 cm
A wheel covers a distance of 9.5km in 2000 revolutions. The diameter of the wheel is
1. 15m
2. 7.5m
3. 1.5m
4. 75m
A helicopter is flying horizontally at an altitude of 2km with a speed of . A packet is dropped from it. The horizontal distance between the point where the packet is dropped and the point where it hits the ground is (g=10)
1. 2km
2. 0.2km
3. 20km
4. 4km
If time of flight of a projectile is 10 seconds. Range is 500m. The maximum height attained by it will be
1. 125m
2. 50m
3. 100m
4. 150m
The maximum horizontal range of a projectile is 400m. The maximum height attained by it will be-
1. 100m
2. 200m
3. 400m
4. 800m
A ball rolls off top of a staircase with a horizontal velocity u m/s. If the steps are h metre high and b mere wide, the ball will just hit the edge of nth step if n equals to
1.
2.
3.
4.
An aeroplane is flying at a constant horizontal velocity of 600km/hr at an elevation of 6km towards a point directly above the target on the earth’s surface. At an appropriate time, the pilot releases a ball so that it strikes the target at the earth. The ball will appear to be falling
1. On a parabolic path as seen by pilot in the plane
2. Vertically along a straight path as seen by an observer on the ground near the target
3. On a parabolic path as seen by an observer on the ground near the target
4. On a zig-zag path as seen by pilot in the plane
A man standing on the roof of a house of height h throws one particle vertically downwards and another particle horizontally with the same velocity u. The ratio of their velocities when they reach the earth’s surface will be
1.
2. 1:2
3. 1:1
4.
A particle moves along a circle with a uniform speed v. After it has made an angle of 60 its speed will be
1.
2.
3.
4. v