Answer:
First Dot That is located on Earth.
Explanation:
Due to Earth's gravity being greater than the moon's on earth there is more gravitational force pulling down on the spacecraft.
Answer:
Expression of work done is

Work done to move the sled is given as 187.2 J
Explanation:
As we know that the formula of work done is given as

here we know that
F = 12.6 N
d = 15.4 m

so we will have


According to the saving of the momentum, the total momentum before collision is equal to the total momentum after collision
<em><u>in symbols:</u></em>
<em>
</em>
thus

then, the initial momentum of the second cart

Explanation:
photography presente in frame was of 11 meter thats why
Answer:
6.4×10⁻¹⁹ C
Explanation:
From the question,
V = E×d.............. Equation 1
Where V = electric potential, E = Electric Field, d = distance moved by the particle.
Given: E = 75 N/C, d = 10 m.
Substitute into equation 1
V = 75×10 = 750 V.
Also Using,
W = qV.................. Equation 2
W = Work done by the particle when it moves, q = Particles charge
make q the subject of the equation,
q = W/V............ Equation 3
Given: W = 4.8×10⁻¹⁶ J, V = 750 V
Substitute into equation 3
q = 4.8×10⁻¹⁶/750
q = 6.4×10⁻¹⁹ C