PHYSICS HIGH SCHOOL

A skier starting from rest accelerates in a straight line down a 43,000 m slope at 1 m/s. How fast were they moving after 5 s?

Answers

Answer 1

Answer:

Answer:

5m/s

Explanation:

The skier accelerates at 1 m/s, then, the acceleration is:

$a=1(m)/(s^2)$

to find the speed after 5 seconds you use the following formula:

$a=(v-v_o)/(t)$

but vo = 0m/s because the skier is at rest at the beginning.

You do v the subject of the formula:

$v=at=(1(m)/(s^2))(5s)=5(m)/(s)$

hence, the velocity is 5m/s

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Seed is 4m/s 3 sec later at the bottom of the slope it's speed is 22m/s what is the average acceleration

Answers

U1 = 4 m/s
U2 = 22 m/s
t1 = 0
t2 = 3 sec.

α= $(U2 - U1)/(t2 - t1)$

The energy an object has because of its position is called _____

Answers

Answer:

Gravitational potential energy

Explanation:

The gravitational potential energy is the energy that an object has because of its positive with respect to a certain reference level (generally assumed to be the ground level).

The magnitude of the gravitational potential energy is given by

$U=mgh$

where

m is the mass of the object

g is the strenght of the gravitational field

h is the height of the object with respect to the reference level

From the formula, we see that the higher the object is, the larger its gravitational potential energy is.

A mass is stretched 4 centimeters from the equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force?

Answers

A mass is stretched 4 centimeters from the equilibrium position of a spring. The restoring force will also double if the displacement doubles.

What is restoring force ?

The restorative force is a force that acts to return a body to its equilibrium position. The restoring force is always directed back toward the system's equilibrium position and is solely determined by the position of the mass or particle. The restoring force is frequently mentioned in basic harmonic motion.

F = k Hooke's law force or spring force are other names for x. In this equation, x represents the displacement from equilibrium or deformation, F represents the restoring force, and k represents a constant relating to how difficult it is to deform the system. The minus sign represents a restoring force acting in the opposite direction of the displacement.

Thus, The restoring force will also double if the displacement doubles.

To learn more about restoring force, follow the link;

brainly.com/question/12162527

#SPJ2

From Simple Harmonic Motion (SHM), the restoring force is given by:

F = -ω²x

We can see that restoring force is proportional to the displacement, x. So if the displacement x is doubled, then the restoring force will also be doubled.

According to Newton's Third Law of Motion, what happens when two objects of unequal masses collide? A.
The object with the larger mass will have greater damage.

B.
The object with the smaller mass will continue forward due to inertia.

C.
They will push away from each other in proportion to their masses.

D.
They will both make a sudden stop.

Answers

Newton's third law is that for every action, there is an equal and opposite reaction.
A Damage is not a part of physics, at least I don't think it is.
B Is just downright wrong. If anything, the smaller mass will be pushed forward with the heavier mass.
C Sounds correct
D It's wrong, because the masses are not equal, or else they would stop.

Which project involved the goal of orbiting a manned spacecraft around earth? A. Mercury

B. Apollo

C. Gemini

D. Skylab

Answers

A. Mercury
Project Mercury was designed to send a person into orbit before the Soviet Union did so.

Answer:

The anser is A. Mercury

I just took the test And I swere that I did't coppy off of the other person

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What effect does adding more loops to the wire coil have on the electromagnet?

Answers

The strength of the electromagnet depends on the magnitude of the current in the wire and the number of turns of wire around the core. If you add more turns to the coil and keep the magnitude of the current constant, the electromagnet becomes stronger.

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