- #1
Nubcake
- 35
- 0
A tennis ball is thrown straight up at 10 m s -1 from a car traveling at 30 m s -1
a)Determine the time of flight for the ball
b)How far will the car have traveled before the ball lands in the car?
c)Why in practice would your answer to a) not happen
S = ut
v = u + at
a) At first I thought it was straight forward but I think I may be confusing myself here:
My view on this is that the question is asking determine how long the ball is in the air for so ,
Initial vertical velocity = 10
a = -9.8
Final vertical velocity = 0
Using v = u + at
0 = 10 + -9.8xt
9.8t = 10
t = 1.02 s
Then I was thinking is this the time it takes for the ball to reach maximum height (Since v=0 at max height) or is this the time it takes to go up and fall back down ? Who can point me in the right direction here.
b) Straight forward , S = ut
S = 30x1.02
S = 30.6m
c) Unsure , thought about it and was thinking it could be to do with the fact the car is moving at 30m s -1 ?
a)Determine the time of flight for the ball
b)How far will the car have traveled before the ball lands in the car?
c)Why in practice would your answer to a) not happen
S = ut
v = u + at
a) At first I thought it was straight forward but I think I may be confusing myself here:
My view on this is that the question is asking determine how long the ball is in the air for so ,
Initial vertical velocity = 10
a = -9.8
Final vertical velocity = 0
Using v = u + at
0 = 10 + -9.8xt
9.8t = 10
t = 1.02 s
Then I was thinking is this the time it takes for the ball to reach maximum height (Since v=0 at max height) or is this the time it takes to go up and fall back down ? Who can point me in the right direction here.
b) Straight forward , S = ut
S = 30x1.02
S = 30.6m
c) Unsure , thought about it and was thinking it could be to do with the fact the car is moving at 30m s -1 ?