A 1700kg rhino charges at a speed of 50.0km/h. what is the magnitude of the average force needed to bring the rhino to a stop in

Question

never [62]

3 years ago

13

A 1700kg rhino charges at a speed of 50.0km/h. what is the magnitude of the average force needed to bring the rhino to a stop in

0.50s? express your answer to two significant figures.

Physics

2 answers:

klio [65] · Answer 1 · 2022-06-30T18:30:10+03:00

First, let's convert the initial speed of the rhino:
$v_i = 50 km/h = 13.9 m/s$
The acceleration of the rhino is given by:
$a= \frac{v_f-v_i}{t}= \frac{0-13.9 m/s}{0.5 s}=-27.8m/s^2$
where the negative sign means it is a deceleration. We can neglect the negative sign since we are interested only in the magnitude of the force applied, which is given by Netwon's second law:
$F=ma = (1700 kg)(27.8 m/s^2)=4.7 \cdot 10^4 N$

katrin [286] · Answer 2 · 2022-06-30T20:00:18+03:00

The magnitude of the average force needed to bring the rhino to a stop in 0.50s is about 4.7 × 10⁴ Newton

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<h3>Further explanation</h3>

Newton's second law of motion states that the resultant force applied to an object is directly proportional to the mass and acceleration of the object.

$\large {\boxed {F = ma }$