You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is
1 answer:
You might be interested in
Hi there!
Recall the following relationships:
W = Work (J)
U = Potential Energy (J)
m = mass (kg)
g = acceleration due to gravity (9.8 m/s²)
h = height (m)
t = time (s)
Begin by calculating the work:
Now, divide by the time to solve for power:
**W is the unit for power (Watts). Be careful not to get the two confused.
Answer:
0.016 s
Explanation:
Initial velocity, u = 0
use the third equation of motion to find the acceleration of the rock.
Net displacement in the vertical direction would be zero. y = 0
Use second equation:
Thus, the rock will return to its initial release point in 0.016 s.
Answer:
Explanation:
According to Charles Law
=>
Where = 0.0279 m³,
= 280 K and
= 320 K
=>
=> = 0.03189 m³