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10 Nov 2019
20&21 please explain process
A car going 80 ft/sec (about 55 mph) brakes to a stop in five seconds. Assume the deceleration is constant. (a) Graph the velocity against time, U for 0 lessthanorequalto t lessthanorequalto 5 seconds. (b) Represent, as an area on the graph, the total distance traveled from the time the brakes are applied until the car comes to a stop. (c) Find this area arid hence the distance traveled. (d) Now find the total distance traveled using antidiffer-entiation. A 727 jet needs to attain a speed of 200 mph to take off. If it can accelerate from 0 to 200 mph in 30 seconds, how long must the runway be? (Assume constant acceleration.)
20&21 please explain process
A car going 80 ft/sec (about 55 mph) brakes to a stop in five seconds. Assume the deceleration is constant. (a) Graph the velocity against time, U for 0 lessthanorequalto t lessthanorequalto 5 seconds. (b) Represent, as an area on the graph, the total distance traveled from the time the brakes are applied until the car comes to a stop. (c) Find this area arid hence the distance traveled. (d) Now find the total distance traveled using antidiffer-entiation. A 727 jet needs to attain a speed of 200 mph to take off. If it can accelerate from 0 to 200 mph in 30 seconds, how long must the runway be? (Assume constant acceleration.)
Sixta KovacekLv2
16 Feb 2019