Find the ratio of pA/pB, when A is a 5.0 kg rock falling 10 meters to the ground and B is a 1.0 kg apple falling 10 meters to the ground.(Compare their momenta just before they hit the ground.)

pA/pB = 5.00

Explanation:

To find the ratio pA/pB you first calculate the velocities of both rocks just before they hit the ground. You use the following formula:

  (1)

vo: initial velocity = 0

g: gravitational acceleration = 9.8m/s^2

y: height = 10m

The parameters y, g and vo are the same for both rocks, hence the velocity is the same, v = vA = vB. Next, it is not necessary to calculate the velocities because these are canceled in the ration for the momentum:

finally, you replace the values of the masses and you obtain:

hence, the ratio is 5.0

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: