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Shkiper50 [21]
3 years ago
5

If a book has a a mass of 2 kg, how much does the book weigh?

Physics
1 answer:
Darina [25.2K]3 years ago
5 0

Answer:

A. 20 N

Explanation:

weight of book is 2×10=20N .....

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Is the distance a baseball travels in the air after being hit distance a baseball travels in the air after being hit a discrete
Nookie1986 [14]

Answer:

Continuous random variable

Explanation:

The distance that baseball travels after being hit is a random variable and it assume any real value defined on the sample space.

The distance is measurable and thus is continuous random variable because continuous variable cannot be counted but could be measured.

3 0
3 years ago
An astronaut floating in space throws a wrench forward with the force of 10 N.
Jobisdone [24]

Answer:

10N

Explanation:

1. Every Action has an equal and opposite reAction.

2. If 10N of force is acted upon an wrench, then the wrench will react with an equal amount of force, but in the opposite direction.

7 0
3 years ago
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Which of the following is an example of the effect of a natural force ?
Ulleksa [173]
A. Rain falling from the sky.
8 0
4 years ago
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The gravitational force exerted on a baseball is 2.21 N down. A pitcher throws the ball horizontally with velocity 18.0 m/s by u
valentina_108 [34]

Answer:

(a) S = 1.8m

(b) F = 23.9N

Explanation:

The solution to this problem requires the knowledge of the concepts of constant acceleration motion for part (a) and newton's second law for part(b).

(a) s =(u + v)/2 ×t

(b) F = m(v-u)/t

u = 0m/s because the pitcher starts to throw the ball from rest

See attachment below for full solution steps.

3 0
4 years ago
A projectile is shot at an angle 45 degrees to the horizontalnear the surface of the earth but in the absence of air resistance.
juin [17]

Answer:

Explanation:

Given

For first case

launch angle \theta =45^{\circ}C

at highest point h=150 m/s

150=u\cos 45

u=\frac{150}{\cos 45}=212.132 m/s

For second case

\theta _2=37^{\circ}C

at highest Point velocity is u\cos \theta _2

=212.132\times \cos 37

=169.41 m/s

as there is no acceleration in x direction therefore horizontal velocity is same          

7 0
3 years ago
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