A handball is tossed vertically upward with a velocity of 19.6 meters per second. Approximately how high will it rise?
Correct answer: C. 20 m
- A. 15 m
- B. 25 m
- C. 20 m
- D. 30 m
Explanation
The correct answer is 20 m. The maximum height of a projectile thrown vertically upward can be found using the formula h = (vi2) / (2g). Here, vi is 19.6 m/s (initial velocity) and g is 9.8 m/s2 (acceleration due to gravity). Substituting these values, we have h = (19.6)2 / (2 × 9.8) = 384.16 / 19.6 = 19.6 m, which rounds to 20 m. Option A (15 m) underestimates this value, Option B (25 m) and Option D (30 m) overestimate it. Only Option C matches the calculated height of approximately 20 m.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Force and Motion questions
A small submarine of mass 1000 kg sinks in water with a uniform speed of 2 m/s. What is the resultant force exerted on the submarine as it sinks?
A cricket ball of mass 0.5 kg strikes a bat normally with a velocity of 30 m s-1 and rebounds with a velocity of 20 ms-1 in the opposite direction. The impulse of the force exerted by the ball on the bat is
A projectile can have the same range R for two angles of projection. If t1 and t2 are the times of nights in the two cases, then product of the time of flights is proportional to:
Time taken by a projectile to reach maximum height is t =
A stone is thrown horizontally with an initial speed 30 m/s from a bridge. Find the stone's total speed when it enters the water4 s later. (Ignore air resistance.)
A force F = 8i -6j -10k newton produces acceleration of 1 m s-2 in a body. The mass of the body is: