3 years ago

A ball rolls across the ground and slows to a stop.

1 answer:

5 0

gravity does help the ball since gravity pulls down objects, it causes more friction on the ball therefore causing the ball to slow down faster.

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What is a star called that dies peacefully

Setler [38]

Answer:

This type of star is called the "white dwarf." When a very massive star exhausts its nuclear fuel it explodes as a supernova.

Hope it helps

6 0

4 years ago

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You take a trip that covers 240 kilometers and takes 4 hours. Your average speed is

Lorico [155]

Answer:

Your average speed is 60 kilometers per hour

Explanation:

240 divided by 4 is 60

240/4=60

7 0

3 years ago

A distance-time graph indicates that an object travels 2 m in 2 s and then travels another 80 m during the next 40 s. What is th

GaryK [48]

To find the average speed, we must calculate the total distance covered by the object and then divide it by the total time of the motion.

The total distance covered by the object is
$S=2m+80m=82 m$
while the total time of the motion is
$t=2s+40 s=42 s$

Therefore, the average speed of the object is
$v= \frac{S}{t}= \frac{82 m}{42 s}=1.95 m/s$

6 0

4 years ago

Select all of the answers that apply.

galben [10]

<span>The answers are --

a) wind direction
b) wind speed
e) intensity of precipitation
f) location of precipitation</span>

6 0

4 years ago

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A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2

Tasya [4]

Answer:

Coefficient of friction = 0.836

Explanation:

If v be the speed after one quarter of the circular path

v² = 2as = 2 x 1.85 x 2πr/4 ; v²/r = 1.85 x 3.14 = 5.8

tangential acceleration = 5.8 m/s²

radial acceleration = v² /r = 5.8

total acceleration = √2 x 5.8

m x√2 x 5.8 = m x g xμ

μ = √2 x 5.8 / 9.8 = 0.836

7 0

4 years ago