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Nookie1986 [14]
3 years ago
7

6

Physics
1 answer:
choli [55]3 years ago
3 0

Answer:

B. Acceleration in the direction of motion speeds you up

Explanation:

Acceleration is defined as when something gains speed. For example, when a car speeds up. Deceleration is when the car slows down, and looses speed. When defining these terms, think of a car going faster, then slowing down at a red light.

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Pls help I’m being timed!!
Firdavs [7]

Answer:

B

Explanation:

Heat increase molecular motion

6 0
3 years ago
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39. A dog runs on a waxed floor at an initial speed of 2 m/s. It slides to a stop with an
Sedbober [7]

Answer:

Explanation:

Use the one-dimensional equation

v_f=v_0+at where vf is the final velocity of the dog, v0 is the initial velocity of the dog, a is the acceleration of the dog, and t is the time it takesto reach that final velocity. For us:

0 = 2 + -.43t and

-2 = -.43t so

t = 4.7 seconds

5 0
3 years ago
3. (Solids, Liquids) have no definite shape, but definite volume.<br> A)Solids <br> B)Liquids
JulijaS [17]

Answer:

b liquids

Explanation:

this is because liquids take the shape of  their container while solids stay solid and do not change shape and solids, liquids and gases all have definite volume.

7 0
3 years ago
A 15g football was kicked to an acceleration of 55m/s2. What was the force applied to it? 40N 3.7N 825N
Pepsi [2]

Answer:

f =ma = 0.015 * 55 = 0.825 N

so yeah that's ur ans

8 0
2 years ago
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An apple hanging from a limb has potential energy because of its height . If it falls ,what becomes of this energy just before i
sineoko [7]

Answer: Just before its hits the ground it becomes kinetic energy and when it hits the ground it becomes in another form of energy (acoustic energy or thermal energy, for example)

Explanation:

Energy is the ability of matter to produce work in the form of movement, light, heat, among others.

In this sense, according to the Conservation of Energy principle: <em>"energy is not created or destroyed, it is transformed."</em>

So, in the case of the apple, its total energy is conserved.

When the apple is hanging from a limb, it has zero kinetic energy K_{o}=0 (because it is at rest) and has gravitational potential energy U_{o}, which depends on the mass m, the acceleration due gravity g and the height h:

U_{o}=mgh

When the apple falls, just before its hits the ground, this gravitational potential energy transforms in kinetic energy K_{1} (since the apple is moving), which depends on the mass and velocity V of the apple:

K_{1}=\frac{1}{2}mV^{2}

When the apple hits the ground, the gravitational potential energy is zero (h=0) and the kinetic energy transforms into some other form of energy (acoustic energy or thermal energy, for example).

3 0
3 years ago
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