Four student helpers push carts filled with textbooks. Each cart has the same mass, 25 kg. Each student pushes the cart with a different amount of force. Which cart has the least change in speed?

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

a and b sometimes have a positive value