Answer:
4 seconds
Explanation:
Average acceleration is change in velocity over change in time:
a = Δv / Δt
Δt = Δv / a
Δt = (15 m/s - 5 m/s) / 2.5 m/s²
Δt = 4 s
Answer: The time taken by the bicycle rider is 4 seconds.
Explanation:
To calculate the time taken by the rider, we use first equation of motion:
[tex]v=u+at[/tex]
where,
v = final velocity of the rider = 15 m/s
u = initial velocity of the rider = 5 m/s
a = acceleration of the car = [tex]2.5m/s^2[/tex]
t = time taken = ?
Putting values in above equation, we get:
[tex]15=5+(2.5\times t)\\\\t=\frac{15-5}{2.5}\\\\t=4s[/tex]
Hence, the time taken by the bicycle rider is 4 seconds.
