2 years ago

It took 500 newtons of force to push a car 4 meters. How much work was done?

Physics

1 answer:

Ede4ka [16]2 years ago

3 0

Work = Force x Distance = 500 x 4 = 2000 Nm = 2000 J

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2. How much do you think the force of friction must be? Why?

Tamiku [17]

Answer:

It must be high do to the gravity

Explanation:

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2 years ago

You are operating a pwc in an area where swimmers are in the water. When must you slow your pwc to "slow, no wake speed"?.

Lostsunrise [7]

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2 years ago

calculate the frequency and time period of sound wave of 35 m wave length propagating at a speed of 3500m/s

zheka24 [161]

Answer:

Frequency = 100 Hz

Time period = 0.01 sec

Explanation:

f= 3500/35 = 100

T = 1/f = .01

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2 years ago

If the height of the ramp was 1.2 m above the floor, how long would it take for the marble to hit the ground after it left the r

Evgesh-ka [11]

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3 years ago

You throw a baseball directly upward at time ????=0 at an initial speed of 14.9 m/s. What is the maximum height the ball reaches

xeze [42]

Answer:

Maximum height, h = 11.32 meters

Explanation:

It is given that,

The baseball is thrown directly upward at time, t = 0

Initial speed of the baseball, u = 14.9 m/s

Ignoring the resistance in this case and using a = g = 9.8 m/s²

We have to find the maximum height the ball reaches above where it leaves your hand. Let the maximum height is h. Using third equation of motion as :

$v^2-u^2=2ah$

At maximum height, v = 0

and a = -g = -9.8 m/s²

$h=\dfrac{v^2-u^2}{2a}$

$h=\dfrac{0-(14.9\ m/s)^2}{2\times -9.8\ m/s^2}$

h = 11.32 meters

Hence, the maximum height of the baseball is 11.32 meters.

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2 years ago