What impulse occurs when an average force of 20-N is applied by a dad to a new bike riding child for 3.5 s. b) What change in momentum does the new bike rider undergo? c) If the combined mass of the bike and the child is 32 kg and the child was initially at rest, calculate the final speed.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

What is the magnitude of the gravitational force acting on the earth due to the sun?

What belongs in the areas marked x and y? x: the internal energy of a piston system increases as heat is added and rises to a cool area y: as thermal energy is added to a container, some of the energy is lost to the environment x: as thermal energy is added to a container, some of the energy is lost to the environment y: the internal energy of a piston system increases as heat is added and rises to a cool area x: a cold spoon placed in hot liquid gets warmer y: thermal energy is converted to light energy x: thermal energy is converted to light energy y: a cold spoon placed in hot liquid gets warmer