(20 Points) PLS HELP ASAP I WILL GIVE BRAINLIEST A prototype for an electric car has a mass of 1 400 kg. It converts electrical energy into kinetic energy with an efficiency of 90%. The approximate amount of energy its battery expends to accelerate the car from rest to 25m/s is what?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.