HESI PHYSICS & CHEMISTRY QUESTIONS WITH CORRECT ANSWERS

Which of the following answer choices results in the highest average speed?? o 1500 meters in 55 seconds o 1800 meters in 70 seconds o 1200 meters in 40 seconds o 600 meters in 25 seconds Correct To find average speed, we need to divide the distance the object travels by the time the object travels. We will need to do this for each of the four answer EXAM choices. Average Speed=DistanceTimeAverage Speed=DistanceTime Answer 1 Average Speed =1500 m55 s=1500 m55 s = 27.3 m/s Answer 2 Average Speed =1800 m70 s=1800 m70 s = 25.7 m/s Answer 3 Average Speed =1200 m40 s=1200 m40 s = 30.0 m/s Answer 4 Average Speed =600 m25 s=600 m25 s = 24.0 m/s We can see that the third answer has the highest average speed. HESI Physics Questions and answers 2. During acceleration testing, a performance car launches from the starting line, and 4 seconds later is traveling 27 m/s. It continues accelerating, and 10 seconds after launch the car reaches 44 m/s. What is its average acceleration from 27 m/s to 44 m/s? o 1.9 m/s² o 2.8 m/s² o 14.5 m/s² o 3.7 m/s² Correct To find average acceleration, we need to divide the change in velocity by the change in time. Avg Acceleration=Δ VelocityΔ TimeAvg EXAM Acceleration=Δ VelocityΔ Time =Velocity2−