Amerry-go-round is a common piece of playground equipment. a 3.0-m-diameter merry-go-round with a mass of 250 kg is spinning at 20 rpm. john runs tangent to the merry-go-round at 5.0 m/s, in the same direction that it is turning, and jumps onto the outer edge. john’s mass is 30 kg. what is the merry-goround’s angular velocity, in rpm, after john jumps on

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

What is special about a dc circuit ?