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dmitriy555 [2]
3 years ago
8

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65m/s

Physics
1 answer:
Makovka662 [10]3 years ago
3 0

Acceleration = velocity/time.

Please upload the complete question..

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A man can lift a mass of 200kg onThe surface of the earth. what is the amount of mass he can lift on the surface of the moon?
Arlecino [84]

Answer:

1,211.1 kg.

Explanation:

the force of gravity is less on the moon than on earth, so if the man can lift 200kg on earth, he could lift a greater amount on the moon because there is less resistance from gravity.

To know the amount of mass he can lift on the moon, we first need to know the amount of weight that is equivalent to those 200kg here on earth. This because the weight of the object is equal to the force that must be applied to lift it, and that force is applied by the man and it will be the same here and on the moon.

We calculate weight using the formula:

w=mg

where w is the weight of the object (the force with which the earth attracts the object) m is the mass and g the acceleration of gravity.

so

w=200g

for earth the acceleration due to gravity is:  g=9.81m/s^2

thus:

w=(200kg)(9.81m/s^2)\\w=1962N

now we use this value to calculate the mass he can lift on the moon, since for the moon g=1.62m/s^2.

we use the same equation, w =mg substituting w = 1962N and g=1.62m/s^2:

w=mg\\\\1962N=m(1.62m/s^2)\\\\m=\frac{1962N}{1.62m/s^2}\\\\ m=1,211.1kg

he can lift 1,211.1 kg.

You can also find the result using the approximate value of the acceleration of gravity on the moon as g/6, where g is the acceleration on earth.

8 0
4 years ago
Why do you think you need to stir the Kool Aid?
PtichkaEL [24]

Answer:

Stirring the Kool aid enables the the kool-aid to dissolve in water by keeping all of the crystals off the bottom and in the water.

6 0
3 years ago
Read 2 more answers
To travel at a constant speed,a car engine provides 24 KW of useful powers. The driving force on the car is 600N.AT what speed d
Whitepunk [10]

Answer: D. 40

Explanation:

Power = Force * Velocity

Force = 600N

Power needs to be converted to Watts:

= 24 * 1,000

= 24,000 W

24,000 = 600 * Velocity

Velocity = 24,000/600

= 40 m/s

3 0
3 years ago
According to newton's second law, if you have an object that is put under acceleration due to a force, how could you reduce the
expeople1 [14]

Answer:

We could reduce the force or increase the mass of the object.

Explanation:

Using the definition of force, according to Newton's second law,  (F = ma) the acceleration is directly proportional to the force and inversely proportional to the mass. Therefore, if we want to reduce the acceleration of an object we have two options:

  1. We could reduce the force
  2. We could increase the mass

In both cases a will decrease.  

I hope it helps you!

7 0
3 years ago
What is kinetic energy?
Lemur [1.5K]

Answer:

A, the energy an object has due to its motion.

Explanation:

Kinetic energy is the energy created by motion.

3 0
3 years ago
Read 2 more answers
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