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neonofarm [45]
4 years ago
13

Compare and contrast power and work.

Physics
1 answer:
cestrela7 [59]4 years ago
6 0

Answer:

<u>Comparison</u>

Displacement and force are factors of both work and power

Work=<u>Force× Displacement</u>

power=(Force×Displacement)/time

Therefore power is the derivative of work with respect to time.

<u>Contrast</u>

Work is defined as a product of force and distance while power is the rate at which the work is done.

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Does the shape of a skateboard affect how will travel?
nika2105 [10]

Answer:

Yes

Explanation:

The shape will affect the friction and the way the skateboard moves.

6 0
3 years ago
The John Hancock Center in Chicago is the tallest in the United state's in which there are residential apartments. The Hancock c
Marina CMI [18]

The final velocity of the ice is 82.0 m/s

Explanation:

The chuck of ice in this problem is in free fall, so we can use the following suvat equation for uniformly accelerated motion:

v^2-u^2=2as

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the displacement

In this problem, we have:

u = 0 is the initial velocity of the chuck of ice

a=g=9.8 m/s^2 is the acceleration of gravity (we choose downward as positive direction)

s = 343 m is the vertical displacement (the height of the tower)

Solving for v, we find the final velocity of the object:

v=\sqrt{u^2+2as}=\sqrt{0+2(9.8)(343)}=82.0 m/s

Learn more about free fall motion here:

brainly.com/question/1748290

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brainly.com/question/2455974

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#LearnwithBrainly

5 0
3 years ago
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 60.0 m/s , and it leav
nata0808 [166]

Answer:

F = -307.4 N

Explanation:

It is given that,

Mass of the baseball, m = 0.145 kg

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Time of contact, t=1.75\ ms=1.75\times 10^{-3}\ s

(a) It is assumed to find the horizontal component of average force. It is given by :

F=m\dfrac{v-u}{t}

F=0.145\dfrac{56.29-60}{1.75\times 10^{-3}}

F = -307.4 N

So, the horizontal component of average force is 307.4 N. Hence, this is the required solution.

8 0
3 years ago
1. In 10 seconds, a car accelerates 4 m/s/s to 60 m/s. How fast was the car going before it accelerated?
ladessa [460]
4m/s is the answer you are looking for
3 0
3 years ago
If the mass of a pendulum is increased (with other factors controller), would the period (time) decrease or stay the same?
Akimi4 [234]
The period of the pendulum depends only on the length from the pivot to the "center of mass". So if the string has no mass, then the amount of mass on the end doesn't make any difference.
But if the pendulum is suspended on, say, a chain with mass, then the more mass on the bottom, the lower the center of mass is, and the longer the period is.
8 0
4 years ago
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