Q1) You whirl a 2 kg body attached to a 2 meter cord around your head in a nearly horizontal circle with a speed of 3 m/s. What is the tension in the cord?

Q2) You are standing at the top of a very high cliff. You kick a rock off the edge and time how long it falls. If it falls for 2.7 seconds before hitting the valley floor, what is the height of the cliff?

Q3) The acceleration of a ball as it rolls down a ramp is 3.0 m/s². It starts from rest. What is the ball's speed after 4 seconds?

Q4) You push on a block on frictionless ice with a force of 8 N, causing it to accelerate at 2 m/s². The mass of the block is?