EmSAT Physics Practice Test 2022 with Answer Explanation

1. What is the current flowing through resistor R1 in the circuit below?

2. A car is traveling on a straight highway with a speed of 40 m/s. The driver steps on the gas pedal and, 5 seconds later, the car’s speed is 60 m/s. Find average acceleration of the car.

3. A box of mass 25 kg is sliding across a wooden floor. The coefficient of kinetic friction between the box and the floor is 0.2. If the box is being pulled by a force of 100 N (parallel to the floor), what is the acceleration of the box? (Acceleration due to gravity, g = 10 m/s²)

4. An object of mass 5 kg is pushed off the edge of a rooftop that is 4m above the floor. Find the speed of the object as it strikes the floor. (Acceleration due to gravity, g = 9.8m/s²)

5. Two balls rolls toward each other, collide, and separate. If there was no net external force acting on the balls, but some kinetic energy was lost, then