3 years ago

This is an opinion question but

1 answer:

8 0

AJAJAJAJ I just going to say what ever I think it is important because imagine you see a rock and think is a normal rock but it ends up being really rare and you can make a lot of money out of it

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A sled and its rider are moving at a speed of 4.0 m/s along a horizontal stretch of snow. The snow exerts a kinetic frictional f

ehidna [41]

Answer:

The acceleration of the sled is "0.49 m/s²". A further explanation is given below.

Explanation:

The given values are,

Speed,

V = 4.0 m/s

Coefficient of kinetic friction,

μ = 0.05

As we know,

⇒ $F \mu=\mu mg$

and,

⇒ $a = \mu g$

On substituting the given values, we get

⇒ $=0.0 5\times 9.8$

⇒ $=0.49 \ m/s^2$

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3 years ago

Carole is very tired and makes coffee. why would newton say that she must use her hand to put up the cup

Marat540 [252]

<span>newton say that she must use her hand to put up the cup because the work is equal to force times it distance, that is in the same direction of the force applied. if carole used her hand to put up the cup, then he is not applying any work because the displacement is not in the same direction of the force</span>

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3 years ago

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If the velocity of a car is 45 km/h west how far can it travel in 0.5 hours?

marissa [1.9K]

Answer: 22.5 km

Explanation: Solution:

v=d/t

Derive to find d

d= vt

= 45 km/h x 0.5 h

= 22.5 km