A car accelerates from 20 i (m/s) to 50 i (m/s) in 5 seconds.
A. 30 i (m/s)
B. 35 i (m/s)
C. 6 i (m/s/s)
A car accelerates from -10 i (m/s) to -40 i (m/s) in 4 seconds. What is its displacement over this time?[Answer in the format: "8 j (m)" , "-20 i (m)". Do not include the quotation marks.]
If an object is accelerating, then it must be speeding up.
A car is driving south at 35 m/s. The driver applies the brakes, causing the car to slow at the rate of 5 m/s/s. What displacement will the car have in 3 seconds?[Answer in the format: "2.5 j (m)" , "-20.8 i (m)". Do not include the quotation marks.]
If a bus has an acceleration of -3 i (m/s/s), then the bus is slowing down.
A car is driving eastward, when the driver applies the brakes, reducing the car's speed at the rate of 3 m/s/s. The car's velocity is reduced to 5 m/s eastward over an eastward displacement of 50 m. What was the car's initial velocity? State your answer to the tenths place.[Answer in the format: "5.0 j (m/s)" , "-20.6 i (m/s)". Do not include the quotation marks.]
A car's average speed can exceed its instantaneous speed.
A bicyclist covers 20 meters at 2 m/s, then covers the next 20 meters at 8 m/s.What is her average speed over the 40 meters?