A lowered Honda Accord can accelerate from 0 to 60 mi/hr in 5 s. What is its acceleration? (a) (b) If the Accord then decelerates at a rate of 3 m/s², how long does it take to travel 100 m?
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- A jet plane has a takeoff speed of vto = 72 m/s and can move along the runway at an average acceleration of 1.7 m/s2. If the length of the runway is 1.4 km, will the plane be able to use this runway safely? O Yes O No Defend your answer.A commuter backs her car out of her garage with an acceleration of 1.40 m/s². (a) How long does it take her to reach a speed of 2.00 m/s? (b) If she then brakes to a stop in 0.800 s, what is her acceleration?A man travels a certain distance at a speed of 40 km/ hr and returns by increasing his speed by 50% what is his average speed for the whole journey? (a) 50 km/hr (c) 48 km/hr (b) 46 km/hr (d) 52 km/hr
- If you drop a rock from a a great height, about how fast will it be falling after 5.6 seconds, neglecting air resistance? (HINT the acceleration due to gravity on the Earth's surface is about 10 m/s2). Answer in m/s, using just a numberIf it requires 300 s to accelerate a bus from 3m/s to 9 m/s:(a) how far has the bus travelled during that time? (b) what is the acceleration of the bus?A race car starts from rest and accelerates at a rate of 5m/s/s for 1.5 seconds. (a) How far did the car travel during this amount of time? (b) How fast was it going after 1.5 seconds?
- Which is the correct answer? Thank youA commuter backs her car out of her garage with an acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 2.00 m/s? (b) If she then brakes to a stop in 0.800 s, what is her acceleration?(a) What is the average acceleration of a skier who, starting from rest, reaches a speed of 8.0 m/sec when going down a slope for 5.0 sec? (b) How far does the skier travel in this time?