HESI Physics exam-with 100% verified answers-2022-2023
1. When a junked car is compacted, which statement is true?
A. Its mass increases.
B. Its mass decreases.
C. Its density increases.
D. Its density decreases.
...
HESI Physics exam-with 100% verified answers-2022-2023
1. When a junked car is compacted, which statement is true?
A. Its mass increases.
B. Its mass decreases.
C. Its density increases.
D. Its density decreases.
Explanation: Since density = mass/volume, it should be obvious that the decrease in volume as a car is crushed should lead to an increase in density. Nothing happens to change the mass of the car.
2. A car travels 3 miles north, 6 miles south, 2 miles east, 2 miles west, and then 3 miles north. Which of the following is true?
A. The displacement of the car is 16 miles, and the distance traveled is 0 miles.
B. The displacement of the car is 16 miles, and the distance traveled is 16 miles.
C. The displacement of the car is 0 miles, and the distance traveled is 0 miles.
D. The displacement of the car is 0 miles, and the distance traveled is 16 miles.
Expalanation: If a car travels 3 miles north, 6 miles south, 2 miles east, 2 miles west, and then 3 miles north, it has traveled a total distance of 16 miles. However, because of the directions it has traveled, it has ended up in the place where it started, giving it a displacement of 0.
3. Why doesn’t a raindrop accelerate as it approaches the ground?
A. Gravity pulls it down at a constant rate.
B. Air resistance counteracts the gravitational force.
C. Its mass decreases, decreasing its speed.
D. Objects in motion decelerate over distance.
CONTINUED....
[Show More]