Meg runs a 10km race in 45 minutes (0.75 hours). what was her speed in kilometers per hour?
a. 22 km/hr
b. 7.5 km/hr
c. 4.5 km/hr
d. 13 km/hr

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

Describe cytokinesis in plants and animals. in animals: in plants.

How is the ideal mechanical advantage of a wheel and axle calculated?