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3 years ago

I need help this is due today GIVING BRAINLIEST IM DESPERATE!

Physics

1 answer:

Nitella [24]3 years ago

3 0

Answer:

1: is A

2: is C

Explanation:

1: because all other option would imply that the truck was not moved from from its previous position due to the lack of work / force exerted by the car

2: this is because the less dense ball will have less opposing force action on it causing it to move / accelerate / go at a faster speed

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Peter and Fred are skateboarding in a large semicircular halfpipe. Peter starts out from rest at a height h and collides with Fr

jolli1 [7]

Answer:

The answer is h/4

Explanation:

When Peter collides with Fred, the collision is inelastic & they both proceed with a velocity of V/2.

let m represent the masses for Peter & Fred

v represent the initial velocity of Peter

V represent final velocity of both of them

mv + 3m × 0 = (m+m)V

V = v/2

Using the expression; H = v² / 2g .............Eqn 1

Upon substitution of V/2 into Eqn 1 above,

H = (V/2)² / 2g

H = (V²/4) ÷ 2g

Therefore height will be h/4

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3 years ago

The one star that does not appear as a small point of light is called

seraphim [82]

The sun. lol. It is closer to Earth, therefore bigger to us, and not just a small point of light.

5 0

3 years ago

What might happen to the mass and/or the distance between two objects to increase the gravitational force of attraction?

goldfiish [28.3K]

The gravitational force may grow weaker if separation occurs with the distance.

hope i helped :)

6 0

3 years ago

How is desert pavement formed?

mihalych1998 [28]

Desert pavement or commonly called stone or stony pavement is a type of desert surface that is covered with pebbles and stone tight and intertwined. Many of these layers form a type of pavement known as mosaic. When the particles begin to be stacked between different natural agents such as rain, gravity and animals compact the layers and generates a layer that allows the pavement not to erode. Basically runoff and deflation eliminate silt and clay, leaving thicker particles behind.

The correct answer is A.

5 0

3 years ago

A woman falls to the ground while wearing a parachute. The air resistance on the parachute of the parachute is 500N. If the woma

yaroslaw [1]

The fact that the woman falls at a constant velocity means its acceleration is zero.
For Newton's second law, the resultant of the forces acting on a body is equal to the product between the mass m of the body and its acceleration a:
$\sum F = ma$
In our problem, the acceleration is zero, so the resultant of the forces should be zero as well.

Only two forces are acting on the woman: the air resistance R (upward, 500 N) and the weight W (downward). The resultant of these two forces is zero, so
$R-W=0$
$W=R$
and since the air resistance R is 500 N, then the weight (the gravitational force) of the woman is 500 N as well.

4 0

4 years ago

Read 2 more answers