A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a hill with a constant acceleration of 1.7 m/s2 . The ball reaches the bottom of the hill in 7.0 s. What is the ball's velocity at the bottom of the hill?

a. 15 m/s
b. 13 m/s
c. 14 m/s
d. 16 m/s
e. 19 m/s

d

Physics & Space Science

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A 0.28-kg stone you throw rises 34.3 m in the air. The impulse your hand receives from the stone while it throws the stone is

A.

2.7 Ns, up.

B.
2.7 Ns, down.

C.
7.3 Ns, up.

D.
7.3 Ns, down.

E.
9.6 Ns, up.

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Which moon of the Jovian planets has a thick, hazy atmosphere?

a. Io b. Triton c. Europa d. Titan

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If a star has a parallax of 0.05", then its distance in light years is about:

A) 6.4 light years. B) 12.7 light years. C) 20 light years. D) 65 light years. E) 100 light years.

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Why is Titan of interest to astrobiologists?

What will be an ideal response?

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