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Readme [11.4K]
3 years ago
15

A ping pong ball has a mass of about 2.45 grams. Suppose that Forrest Gump hits the ball across the table with a speed of about

4.00 m/s. What is the ball’s KE?
Physics
1 answer:
MrMuchimi3 years ago
6 0

Answer:

0.0196J

Explanation:

KE equation is 1/2*m*v^2

when pluged in above numbers...

0.5*0.00245*4*4=0.0196J

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a diver of mass 101 kg jumps upward off a diving board into water. Diving board is 6m above water. Diver has a speed of 1.2m/s.
8090 [49]
When the diver reaches maximum height, the upward velocity will be zero.

We shall use the formula
v^2 = u^2 - 2gh
where 
v = 0 (velocity at maximum height)
u = 1.2 m/s, intial upward velocity
g = -9.8 m/s^2, gravitational acceleration (downward)
h = maximum height attained above the diving board.

Therefore
0 = 1.2^2 - 2*9.8*h
h = 1.2^2/(2*9.8) = 0.0735 m

Answer: 0.074 m (nearest thousandth)
5 0
3 years ago
A book is sitting on a table. Which of the following is true about the table? O A. It is pushing up on the book. O B. It exerts
777dan777 [17]

Answer:

yes it does exert a force, it pushes it up

Explanation:

this is called normal force

if it didn't exert a force the book would keep going down

according to newton every force has an equal amd opposite reaction

so the book exerts a force on the table and vice versa

hope this helped

5 0
2 years ago
Do you think there might be a point in space between Earth and the Moon where the gravity of each would pull on an object equall
Firlakuza [10]

Answer: Yes.

Explanation:

Assuming Earth and Moon are isolated is space, it is possible to have a point where Earth and Moon will pull at an object with equal force.

That point will be closer to the Moon than the Earth because Moon's gravitational field strength is weaker than Earth's gravitational field strength.

7 0
3 years ago
If gas si supplied by a pipe which pass through a mesuarer to your house, Which case would you pay more for it?
Triss [41]
A.) When its cold .
4 0
3 years ago
How far does a car move when it travels 50 miles an hour for 4 hours?
Alex_Xolod [135]

Answer:

200 mph

Explanation:

50 times 4 equals 200

6 0
3 years ago
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