Physics Spring Exam 2025

A 1200-kilogram car traveling at a constant speed of 9.0 m/s turns at an intersection. The car follows a horizontal circular path with a radius of 25 meters to point P. At point P, the car hits an area of ice and loses all frictional force on its tires. Which path does the car follow on the ice?

• A.

• B.

• C.

• D.

A car that is moving in a circle at a constant speed of 30 mi/hr is _____

• not accelerating since there is no change in velocity

• not accelerating even though there is a change in velocity

• accelerating since there is a change in direction.

• accelerating because there is a change in speed.

A ball with a mass m is fastened to a string and is swung in a vertical circle. When the ball is at the lowest point of the circle the tension in the string is:

• mg

• mg + ma_c

• ma_c - mg

• mg/ma_c

While driving along a country lane with a speed of 20 m/s, you encounter a dip in the road. You coast down the dip that has a radius of 85m. If the passenger is 90-kg what normal force will the person experience?

• 1,306 N

• 1,250 N

• 1,812 N

• 905 N

A car of mass 440 kg is racing on a flat track at 22 m/s around a curve with a 56-meter radius. What minimum coefficient of static friction between the tires and the road is necessary for the car to round the curve without slipping?

• 0.88

• 0.56

• 0.34

• 1.2

Assume that a satellite with a mass of 500kg orbits Earth 225km above its surface. Given that the mass of Earth is 5.97 × 10²⁴ kg and the radius of Earth is 6.38 x 10⁶ m. What is the force of gravity that acts on the satellite? (G = 6.67 x 10^-11)

• 4560 N

• 5230 N

• 6120 N

• 7330 N

M1 = 5kg & M2= 3kg. The two blocks are on a frictionless surface. If F = 4N:

What is the magnitude of the acceleration for the blocks?

• 0.25 m/s²
• 0.5 m/s²
• 1 m/s²
• 2 m/s²

M1 = 5kg & M2= 3kg. The two blocks are on a frictionless surface. If F = 4N:

What is the tension in the string between M1 and M2?

• 3N
• 1.5N
• 2N
• 4N

M1 = 3kg & M2 = 5kg. If h = 2 meters, how long will it take M2 to hit the floor?

• 0.80 seconds
• 0.45 seconds
• 0.64 seconds
• 1.28 seconds

If the system is in equilibrium, what is the mass of m, if there is no friction on the inclined plane?

• 6.0 kg
• 3.2 kg
• 5.0 kg
• 4.5 kg