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anastassius [24]
2 years ago
9

A father is trying to teach his child to ice skate. As the child stands still, the father pushes him forward with an acceleratio

n of 2.0 m/s2 north. If the child's mass is 20 kg what is the force with which the father is pushing
Physics
1 answer:
rjkz [21]2 years ago
4 0

Hi there!

We can use Newton's Second Law:

\Sigma F = ma

∑F = net force (N)

m = mass (kg)

a = acceleration (m/s²)

We are given the mass and acceleration, so:

∑F = 20 · 2 = <u>40 N</u>

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nata0808 [166]

Answer:

b

Explanation:

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3 years ago
Put the following events in the order they occurred to lead to the formation of the solar system:
AfilCa [17]

Answer:

Third → First → Second → Fourth

Explanation:

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3 years ago
You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.
Monica [59]

a)You throw a stone horizontally at a speed of 5.0 m/s from the top of a cliff that is 78.4 m high.

from above statement we got

height = 78.4 m

since the ball is thrown, so its vertical velocity would be zero

u = 0

taking g = 9.8m/s^2

now, using the equation of motion

h = ut + gt^2/2

now putting all the values in it

we got ,

78.4 = 9.8 * t^2/ 2

by solving we got,

t = 4 sec

b) now, since along the horizontal , no force acting and accelaration is zero so

R = ut , R is RANGE

R = 5 * 4

range =  20 m

c)  vertical components of the stone’s velocity just before it hits the ground = v sin θ =

horizontal   components of the stone’s velocity  just before it hits the ground = v cos θ

To know more about velocity  visit :

brainly.com/question/18084516

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4 0
1 year ago
Who is Tim peak where did he come from
Paul [167]
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Born: April 7, 1972 (age 44), Chichester, United Kingdom

Space missions: Expedition 46, Expedition 47, Soyuz TMA-19M

Nationality: British

8 0
3 years ago
Suppose water waves are moving from the deep end to the shallow end of the pool. That is, the waves are moving into a medium (sh
MissTica

Answer:

The waves will turn slightly to the <em><u>left .</u></em>

Explanation :

The waves will turn slightly to the left, because the left side of each wave front hits the boundary first and slows down, moving more slowly than the right side until the right side of the wave front reaches the boundary. THis causes the wave to veer slightly to the left.

  Basically the speed of water depends upon depth of the river or the ocean.

the formula is as follows :

            v =  √gxd

           v =  √d               (g is the gravitational acceleration)

As the water waves are more at the deeper end then the shallow end, so during its course to the shallower end, they are slightly deviated toward the normal., hence it will move slightly to the left.

8 0
3 years ago
Read 2 more answers
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