4 years ago

For a projectile, why is the initial horizontal velocity equal to the final horizontal velocity?

1 answer:

4 0

I am assuming that the context is that of a thrown projectile (a ball, a bullet, etc.) in the gravitational field of the Earth.

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A 37 N object is lifted to a height of 3 meters, What is the potential energy of this object?

prisoha [69]

P.e = mgh

37N × 9.8ms⁻² ˣ 3m

= 1087.8 .

6 0

3 years ago

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What is the affect of applying an unbalanced force on an object?

jolli1 [7]

Answer:

An unbalanced force can change an object's motion. An unbalanced force acting on a still object could make the object start moving. An unbalanced force acting on a moving object could make the object change direction, change speed, or stop moving

Explanation:

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3 years ago

Assume your mass is 84 kg. The acceleration due to gravity is 9.8 m/s 2 . How much work against gravity do you do when you climb

KATRIN_1 [288]

M, mass=84 kg
height, h=3.9m
gravity, g= 9.8m/s2
W = F . d
F=force
d=Displacement
W=work done by force
Now by putting the values
F= m g (Acting downward )
d= h (Upward)
W= m g h ( work done against the force)
W= 84•9.8•3.9J
W= 3210.48
Therefore the answer will be 3210.48J.

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2 years ago

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sertanlavr [38]

Answer:

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3 years ago

Which of the following is a unit of mass?

Bogdan [553]

the answer is c: kilogram

explanation: The standard International System of Units (SI) unit of mass is the kilogram (kg). The kilogram is 1000 grams (g), first defined in 1795 as one cubic decimeter of water at the melting point of ice.

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3 years ago

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