4. Suppose you want to design an air-bag system that can protect the driver in a head on collision at a speed of 100 kph. Estimate how fast the air bag must inflate to effectively protect the driver. Assume the car crumples upon impact over a distance of about 1m. How does the use of the seat belt help the driver?
4. Suppose you want to design an air-bag system that can protect the driver in a head on collision at a speed of 100 kph. Estimate how fast the air bag must inflate to effectively protect the driver. Assume the car crumples upon impact over a distance of about 1m. How does the use of the seat belt help the driver?
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Transcribed Image Text:4. Suppose you want to design an air-bag system that can protect the driver in a head on
collision at a speed of 100 kph. Estimate how fast the air bag must inflate to effectively
protect the driver. Assume the car crumples upon impact over a distance of about 1m. How
does the use of the seat belt help the driver?
5. Suppose the ball is thrown downward with an initial velocity of 3 mps instead of being
dropped. Determine the position and speed after 1.0 s and 2.0 s.
6. Suppose the football was a punt and the left punter's foot at a height of 1.00 m above the
ground. How far did the football travel before hitting the ground?
Transcribed Image Text:8. The pilot of an airplane travelling 160 kph want to drop supplies to flood victims 160 m
below. The supplies should be dropped how many seconds before the plane is directly
overhead?
9. A projectile is fired with an initial speed of 75.2 mps at an angle of 34.5 deg above the
horizontal. Determine the (a) max height (b) total time in the air (c) total horizontal
distance (d) velocity at 1.50 s after firing
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