The horse is galloping at 13 m/s. five seconds later, after climbing the hill, the horse is moving at 5.5m/s. find the accelerarion tgat describes this change in velocity

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

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

What would be the radius of the earth if it had its actual mass but had the density of nuclei? express your answer to two significant figures and include the appropriate units.