2.
A juggler is throwing balls in vertically upward direction at an regular interval of 1 sec. Such that 3
balls are always in air. Find out the initial velocity of each ball
(4) 10 m/s
(3) 15 m/s
(2) 20 m/s
(1) 30 m/s
Answers
Given
- A juggler throws balls vertically upward
- Time = 1 sec
- He throws balls at a speed such that there are 3 balls always in air
To Find
- Initial Velocity of each ball
Solution
● v = u + gt
● So here the time would be 3 seconds and the ball thrown first would reach the maximum height then the time would be 3/2, which is 1.5 sec
✭ Initial Velocity of the balls :
→ v = u + gt
- v = 0 m/s
- u = ?
- g = -10 m/s²
- t = 1.5 sec
→ 0 = u + (-10) × 1.5
→ -u = -15
→ Initial Velocity = 15 m/s
∴ The initial Velocity of the balls is 15 m/s, i.e Option b
Answer:
Given :-
- Regular interval of throwing ball = 1 sec
- Total ball = 3
To Find :-
Initial velocity of each ball
Solution :-
Here is a juggler who is throwing 3 ball upward in time interval of 1 sec and we have to find initial velocity.
By adding time of three ball = 1+1+1 = 3 sec and when divided by 2 = 1.5 sec.
Let's solve
As we know that
v = u + gt
Here,
V = Final Velocity = 0 m/s
U = Initial velocity = ?
G = Gravity = -10 m/s
T = Time = 1.5 sec
Hence :-
When the juggler throws a ball then the velocity of ball is 15 m/s.