Answer:
the car accelerates in

Explanation:
here's the solution : -
we know,
=》

=》

=》

=》

so, acceleration = 1500 m/s^2
now,
=》

here, a = acceleration, v = final velocity,
u = initial velocity, t = time taken.
So,
=》

=》

=》

=》

Answer:
17. h = l − l cos θ
18. 1.40 m
Explanation:
Let's call d the height of the triangle. We can then say:
h = l − d
Using trig, we can write d in terms of l and θ:
d = l cos θ
h = l − l cos θ
If l = 6 m and l cos θ = 40°:
h = 6 − 6 cos 40
h ≈ 1.40
Answer:

Explanation:
The energy of a photon of light can be calculated from the following equation;

where his Planck's constant and is given by,

f is the frequency of the light and is given by 
So therefore,

Earth pulls the moon towards it using gravitational pull/attraction, (because of the moons velocity it didn't crash into earth.)
Answer:
Two very long uniform lines of charge are parallel and are separated by 0.300 m. Each line of charge has charge per unit length.
Explanation: