0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

A ball is projected horizontally with a velocity of $$5ms^{-1}$$ from the top of a tower of height 10 m. When it reaches the ground ( $$g = 10 ms^{-2}$$ )

A
The horizontal component of its velocity is $$14 ms^{_1}$$
B
Its velocity is $$15ms^{_1}$$
C
Its velocity is $$\frac{29}ms{_1}$$
D
Vertical component of its velocity is $$15ms^{-1}$$
Solution
Verified by Toppr

Correct option is A. Vertical component of its velocity is $$15ms^{-1}$$$$V = \sqrt{2gh} = \sqrt{2 \times 10 \times 10}$$$$Vy = 10\sqrt{2}$$$$Vx = 5 m/s$$ same$$V = \sqrt{Vx^{2} + Vy^{2}}$$$$= \sqrt{200 + 25}$$$$= \sqrt{225}$$$$= 15$$

2
Similar Questions
Q1
A ball is projected horizontally with a velocity of $$5ms^{-1}$$ from the top of a tower of height 10 m. When it reaches the ground ( $$g = 10 ms^{-2}$$ )
View Solution
Q2
70.A ball is projected horizontally with a velocity of 5m/s from the top of a tower of height 10m.when it reaches the ground (g=10 m/s2)
View Solution
Q3
A ball is projected horizontally from the top of tower of height 80m, with a velocity of 30m/s. What is the magnitude of the velocity of the ball when it strikes the ground ? (g=10m/s2)
View Solution
Q4
A ball is projected upwards from the top of a tower with a velocity 25 ms1 making an angle 30 with the horizontal. The height of tower is 70 m. After how many seconds from the instant of throwing, will the ball reach the ground. (g=10 ms2)
View Solution
Q5
A ball is dropped from a tower of height 5m. With what velocity does it strike the ground? (g=10m/s2)
View Solution