A 5.00-kg block is initially moving to the right with a speed of 2 m/s. It was pushed to the left which made it decrease its speed to 1 m/s. What is the change in the block's momentum? zero
3-15 kg m/s
5kg m/s
10 kg m/s

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.