Starting at 48th street, dylan rides his bike due east on meridian road with the wind at his back. he rides for 20 min at 15 mph. he then stops for 5 min, turns around, and rides back to 48th street; because of the headwind, his speed is only 10 mph.

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.