During a race the dirt bike was observed to leap up off the small hill at A at an angle of 60° with the horizontal. If the point of landing is 20 ft away, determine the approximate speed at which the bike was traveling just before it left the ground. Neglect the size of the bike for the calculation.

A toboggan having a mass of 12 kg starts from rest at A and carries a girl and boy having a mass of 40 kg and 45 kg, respectively. When the toboggan reaches the bottom of the slope at B, the boy is pushed off from the back with a horizontal velocity of vỏ/t = 2 m/s, measured relative to the toboggan. Suppose that h = 3.2 m. Neglect friction in the calculation. (Figure 1) Figure B vbil A h Part A Determine the velocity of the toboggan afterwards. Express your answer to three significant figures and include the appropriate units. Vt = Submit Value Provide Feedback Request Answer Units ?

The 214000-lb space-shuttle orbiter touches down at about 222 mi/hr. At 182 mi/hr its drag parachute deploys. At 40 mi/hr, the chute is jettisoned from the orbiter. If the deceleration in feet per second squared during the time that the chute is deployed is -0.000200v2 (speed v in feet per second), determine the corresponding distance s traveled by the orbiter. Assume no braking from its wheel brakes. Answer: s = i ft