and passes a cyclist pedaling air to be 343 m/s.)

A motor boat travels 10 km/hr in still water. If the same boat travels in a river flowing at a rate of 10 km/hr then what is its velocity in km/hr if it flows up river?

The average speed of a car is 35 km h-. How far can it travel.in 45 minutes?

An airplane travels 2100 km at a speed of 720 km/h and  then encounters a tailwind that boosts its speed to 990 km/h for the next 2800 km. What was the total time for the trip? What was the average speed of the plane for this trip?[Hint: Does Eq. 2–11d apply?

Would a driver traveling at 15m/s in a 35m/ h zone be exceeding the speed limits?

A cricket player accelerates the ball from a velocity of 5.5 m/s to 39 m/s in one direction.   If this shot takes 3.5 × 10-2 s, calculate the distance, in meters, over which the ball accelerates.

A bullet is shot straight up with an initial speed of 180 m/s. How long is the bullet in the air and how high does the bullet go? (neglect air resistance)

A motorboat maintained a constant speed of 15 mph relative to the water and going 44 miles upstream and then returning the total time for the trip with 7.5 hours use this information to find the speed of the current

How far in meters can a runner running at 3.2 m/s run in the time it takes a rock to fall from rest 176.2 meters?

A person driving her car at 35 km/h approaches an inter- section just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0s before turning to red, and she is 28 m away from the near side of the intersection (Fig. 2–49). Should she try to stop, or should she speed up to cross the intersection before the light turns red? The intersection is 15 m wide. Her car's maximum deceleration is -5.8 m/s?, whereas it can accelerate from 45 km/h to 65 km/h in 6.0 s. Ignore the length of her car and her reaction time. – 28 m - -15 m→ FIGURE 2-49 Problem 73.