Anet force of 2.0 n acts on a 2.0-kg object for 10 seconds. what is the object’s kinetic energy after that 10 seconds (assuming the object starts from rest and there is no friction)?

What is the mass of the same rock on the earth

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (