Physics – Class 11 Practice Test 2

1. The vector 40î + 30ĵ is added to a vector. The result gives 15î + 3ĵ as the answer. The unknown vector is _____

2. The expression for displacement is x = sin(5t). The expression for acceleration is ______

3. Mass is a ____

4. A truck is moving with 40 m/s velocity, a train is moving with a velocity of 80 m/s. How fast is the rain moving with respect to the truck?

5. The velocity of a truck changes form 3 m/s to 5 m/s in 5s. What is the acceleration in m/s²?

6. A ball falls from a building and covers 5m in 10s. What is the acceleration?

7. A body is moving with a constant acceleration of 4î + 3ĵ, starting from the origin. What will be the position of the body after 5s?

8. A force vector (50 N) is making and angle of 30 degrees with X axis has a vertical component of magnitude ___

9. A body of mass 10 kg, projected at an angle of 30° from the ground with an initial velocity of 5 m/s, acceleration due to gravity is g = 10 m/s², what is the time of flight?

10. A vector is represented as 4î + 3ĵ. What is its magnitude?