Velocity =
(displacement)/(time for the displacement), in the direction of the displacement.
Displacement = 8 m south
Time for the displacement = 4 seconds
Direction of the displacement = south
Velocity (8 m south) / (4 seconds), to the south
Velocity = 2 m/s, toward the south
Answer:
Part a)

Part b)

Part c)

Explanation:
As we know that car start from rest and reach to final speed of 87 mph
so we have

now we have
Part a)
acceleration is rate of change in velocity



Part b)
distance moved by car with uniform acceleration is given as



Part c)
As we know that the car start from rest
so final speed after t = 10 s



Answer:
You never gave a paper I want to see the sheet pls then maybe I will see and help you did not explain it really well
Answer:
since each loop is ewuvivalent to one half wave lenght . the length of the string is equal to two halves of a wavelength . put in the form of an equation in the same reasoning also
Before you step on the brakes, the car has kinetic energy, when you step on the brakes, it turns the kinetic energy into heat (thermal energy). When it stops completely, it has potential energy. Hope this helped :)