[填空题]
A stunt driver wants to make his car jump over eight cars ck/tot1 d,b2dg 2 tdi2v+7jec8mvq v1parked side by side below a hor8 qecj17mv+v vizontal ramp
(a) With what minimum speed must he drive off the horizontal ramp? The vertical height of the ramp is 1.5 m above the cars, and the horizontal distance he must clear is 20 m . $m/s$
(b) If the ramp is now tilted upward, so that "takeoff angle" is $10^{\circ}$ above the horizontal, what is the new minimum speed? $m/s$
