Its acceleration will be 0.825 m/s²
What is Acceleration ?
Acceleration is the rate of change of velocity. It is measured in m/s²
Given that a car is driving 8.5 m/s, and speeds up to 11.8 m/s over a period of 4 seconds.
The parameters to consider are;
- Initial velocity u = 8.5 m/s
- Final velocity v = 11.8 m/s
a = Δv ÷ t
a = (v - u) / t
a = (11.8 - 8.5) / 4
a = 3.3 / 4
a = 0.825 m/s²
Therefore, its acceleration will be 0.825 m/s²
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Answer:
5.6 m/s
Explanation:
The acceleration of any possible is the ratio of the velocity of the particle with respect to the time the particle takes in moving. It is mathematically represented as
a = v/t, with m/s² as it's unit, where
v = velocity in m/s
t = time taken in seconds
a = acceleration in m/s²
From the explanation above, we were given in the question that, the speed is 112 m/s and the time if took is 20 seconds, thus, the acceleration is
a = 112/20
a = 5.6 m/s²
Therefore, the magnitude of the acceleration is 5.6 m/s²
Answer:
F = -319.2 N
Explanation:
Given that,
The mass of a bicyclist, m = 70 kg
Mass of the bicycle = 9.8 kg
The speed of a bicycle, v = 16 m/s
We need to find the magnitude of the braking force of the bicycle come to rest in 4.0 m.
The braking force is given by :
So, the required force is 319.2 N.
When the two forces of gravity and air resistance become the same, the object no longer speeds up, and it doesn't slow down either. This is called terminal velocity
So the answer is b