Answer:
2 secs
Explanation:
Parameters given:
Initial velocity, u = 64 ft/s
Acceleration due to gravity, g = -32 ft/s (The minus sign indicates that the tennis ball is moving in the opposite direction of the gravitational force)
Using one of the equations of motion, we can find the time taken:
v = u + gt
When the ball reaches its highest point, the velocity (final velocity) is equal to zero, v = 0 ft/s
Therefore:
0 = 64 - 32*t
32t = 64
t = 64/32 = 2 secs
It takes two seconds for the ball to reach its highest point.
Answer:
2 secs
Explanation:
Step 1:
Data obtained from the question:
Initial Velocity (U) = 64 feet/sec
Final velocity (V) = 0
acceleration due to gravity (g) = −32
ft/sec2
Time (t) =?
Step 2:
Determination of the time taken to reach the highest point. This is illustrated below:
V = U + gt
Applying the above equation, we can easily obtain the time (t) as follow:
0 = 64 + ( −32 x t )
0 = 64 - 32t
Collect like terms
0 - 64 = - 32t
- 64 = - 32t
Divide both side by -32
t = - 64/-32
t = 2 secs
Therefore, the time taken to reach the highest point is 2 secs
