Two projectiles are fired at different angles with the same magnitude of velocity such that they have the same range. At what angles they might have been projected?
Correct answer: C. 25o and 65o
- A. 35o and 75o
- B. 10o and 50o
- C. 25o and 65o
- D. None of the above
Explanation
For two projectiles fired at the same speed, complementary angles (those that add up to 90 degrees) will result in the same range. This is due to the symmetry of the sine function in the range equation: R = (v2 * sin(2θ)) / g. Only the angles 25o and 65o are complementary, thus they will have the same range. Options A and B do not sum to 90 degrees, and therefore do not meet the criteria for having the same range. Option D is incorrect because there is a valid answer in option C.
Last updated
About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
(1, 1, 1) . (2, 2, 2)
1st law of motion gives the definition of:
2nd law of motion measures which quantity?
7.0 kg bowling ball experience a net force of 5.0N. What will be its acceleration?
A 0.2 kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30m/s and rebounds up at 20m/s. The impulse on the ball during the collision is: