Physics 1425 Final Exam Question
and answers already passed
2025/2026
How many significant figures are in 10,002 - correct answer ✔5
Two objects are thrown from the top of a building. One is thrown up and the other is thrown down,
both with the same initial speed. What are their speeds when they hit the street? - correct answer
✔Even though one is thrown up and one is thrown down, they hit the street with the same final speed.
A student kicks a soccer ball in a high arc towards the opponent's goal. At the highest point in its
trajectory: - correct answer ✔neither the ball's velocity nor its acceleration is 0
For general projectile motion, at the highest point of trajectory: - correct answer ✔its velocity is
perpendicular to the acceleration
At the highest point for a general projectiles motion's trajectory, the velocity is perpendicular to the
acceleration.
Two masses, m1 and m2, are connected to each other. Mass m1 slides without friction on the table
surface. Both masses have acceleration of magnitude a. How does the tension in the string compare to
the weight, m2g, of mass m2? - correct answer ✔The tension is smaller than m2g.
This has to be true because since m1 is sliding, it means that the weight of m2 has to be greater than the
tension in the string (otherwise the string would break).
You slam on the brakes of your car, and skid a certain distance on a straight, level road. If you had been
traveling twice as fast, what distance would the car have skidded, under the same conditions? - correct
answer ✔It would have skidded 4 times farther.
and answers already passed
2025/2026
How many significant figures are in 10,002 - correct answer ✔5
Two objects are thrown from the top of a building. One is thrown up and the other is thrown down,
both with the same initial speed. What are their speeds when they hit the street? - correct answer
✔Even though one is thrown up and one is thrown down, they hit the street with the same final speed.
A student kicks a soccer ball in a high arc towards the opponent's goal. At the highest point in its
trajectory: - correct answer ✔neither the ball's velocity nor its acceleration is 0
For general projectile motion, at the highest point of trajectory: - correct answer ✔its velocity is
perpendicular to the acceleration
At the highest point for a general projectiles motion's trajectory, the velocity is perpendicular to the
acceleration.
Two masses, m1 and m2, are connected to each other. Mass m1 slides without friction on the table
surface. Both masses have acceleration of magnitude a. How does the tension in the string compare to
the weight, m2g, of mass m2? - correct answer ✔The tension is smaller than m2g.
This has to be true because since m1 is sliding, it means that the weight of m2 has to be greater than the
tension in the string (otherwise the string would break).
You slam on the brakes of your car, and skid a certain distance on a straight, level road. If you had been
traveling twice as fast, what distance would the car have skidded, under the same conditions? - correct
answer ✔It would have skidded 4 times farther.
