[填空题]
A stunt driver wants to make his ca83/hauxbau ,k r jumpx ah5m8cp a0 wny tdvn9t5v6/9 over eight cars parked side by side below a horp56xhmcd aanv 9 8 y0v/n5ttw9izontal 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? $m/s$
