HELP PLEASE Assuming equal rates of acceleration in both cases, how much farther would you travel if braking from 56 mi/h to rest than from 28 mi/h
a 3.2 times farther
b 4.8 times farther
c 4.0 times farther
d 5.2 times farther

(c) is the correct option.

Explanation:

Given that,

Initial velocity, u = 56 mi/h and 28 mi/h

Final velocity, v = 0

It is coming to rest it means it is under deceleration. So, it will be (-a). Using the third equation of motion as folows :

So,

Also,

Dividing equation (1) by (2)

So,

So, we will travel 4 times farther if  braking from 56 mi/h to rest than from 28 mi/h.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

the body's situation won't change the forces are equal opposit and on the same body