Free Printable gravitational force

1.

Two asteroids exert a gravitational force F, on each other. Sometime later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance?

a)

$\frac{F}{3}$

b)

$\frac{F}{2}$

c)

$\frac{F}{6}$

d)

$\frac{F}{9}$

2.

Earth has a mass of $5.97×10^{24}\ kg$ and orbits the Sun at a distance of $1.50×10^{11}\ m$ . The magnitude of the gravitational force between Earth and the Sun is $3.54×10^{22}\ N$ . What is the mass of the Sun? Use a value of $6.67×10^{-11}\ m^3/kg⋅s^2$ for the universal gravitational constant.

a)

$3.37×10^{32}\ kg$

b)

$1.33×10^{19}\ kg$

c)

$5.69×10^{34}\ kg$

d)

$2.21×10^{30}\ kg$

e)

$2.00×10^{30}\ kg$

3.

A rocket ship is travelling from Earth to Mars with a uniform velocity. Which of the graphs accurately describes the change of the gravitational force, 𝐹 ,between Earth and the rocket ship with time, 𝑡?

a)

a

b)

b

c)

c

d)

d

4.

What happens to Gravitational force if I double both of the masses but don't change their distance?

a)

doubles

b)

half as big

c)

4 times bigger

d)

$\frac{1}{4}$ as much or 4 time smaller

5.

Find the distance between two objects whose masses are m₁ = 4,500 kg, and m₂= 8,700 kg; if the gravitational force between them is F = 2.0 x 10^-8 N.

a)

130565.25 m

b)

361.34 m

c)

0.19575 m

d)

0.783 m

6.

What's the acceleration of gravity of a planet with a mass of 1 x 10²⁵kg and a radius of 5 x 10⁶ meters?

a)

0.267 m/s²

b)

2.67 m/s²

c)

26.7 m/s²

d)

267 m/s²

7.

The velocity is always _____ to the line of a circle.

a)

outwards

b)

towards the center

c)

tangent

d)

faster

8.

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of $3.5m/s^2$ .

a)

$2.4\ m/s\$

b)

$3.6\ m/s$

c)

$3.9\ m/s$

d)

$4.2\ m/s$

9.

Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.

a)

10 N

b)

20 N

c)

30 N

d)

40 N

10.

A bicycle has a period of 0.3s . What is the

speed of its tires if their radius is 30 cm?

a)

6 m/s

b)

3 m/s

c)

60 m/s

d)

30 m/s

gravitational force

Total questions: 10

Worksheet time: 12mins

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