A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.5 m⁄s!. The driver then applies the brakes, causing a uniform acceleration of -2.0 m⁄s!. If the brakes are applied for 3.0 s, a) how fast is the car going at the end of the braking period, and b) how far has it gone from its start?

i think they are all correct

explanation:

they seem good

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!