The tennis balls are slapping culture are on the mezzanine level at a speed of 20 m/s, reflecting back on the original concept with a speed of 30 m/s, 0.02 seconds long in the wood tennis balls if the tennis ball has a mass of 0.1 kg, find the size of a tennis ball to the basket in the unit Newton seconds.
การแปล กรุณารอสักครู่..
