A car travelling at 5 ms. takes 30 seconds to accelerate to 75 ms'. Calculate the acceleration of the car.
What is the step by step process for that answer?

Idon’t quite understand this problem

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)