Answer:
12mph in 2hrs and 3mph in 0.5hrs the total distance would be 12*2 and 3*0.5 which would be 24 and 1.5 so we add those 24+1.5= 25.5. The answer would be 25.5
Answer:
0.09 m/s²
Explanation:
Acceleration: This can be defined as the rate of change of velocity.
The S.I unit of acceleration is m/s².
From the question, expression for acceleration is given as
F' = ma
Using Pythagoras Theory,
√(F₁²+F₂²) = ma................... Equation 1
Where F₁ = Force of the First person on the boulder, F₂ = Force of the Second person on the boulder, F' = resultant force acting on the boulder, m = mass of the boulder, a = acceleration of the boulder.
make a the subject of the equation
a = √(F₁²+F₂²) /m................ Equation 2
Given: m = 825 kg, F₁ = 64 N, F₂ = 38 N,
Substitute into equation 2
a = [√(64²+38²)]/825
a = {√(5540)}/825
a = 74.43/825
a = 0.09 m/s²
The speed of the car is 18.8 m/s
Explanation:
The variables that represent the givens are:
m = 2000 kg (mass of the car)
r = 30 m (radius of the curve)
t = 10 s (time elapsed to cover the curve)
The unknown is the speed of the car, which is given by:
where d is the distance covered by the car during the time t.
Here the car covers a circular trajectory of radius r, so the distance covered is
Therefore, the speed of the car is
Learn more about circular motion:
brainly.com/question/2562955
brainly.com/question/6372960
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Answer:
Her bike is using kinetic energy
B
Explanation:
We calculate the difference between the two velocities,
135 km/h - 35 km/h = 100 km/h
Then, convert the difference into units of m/s
100 km/h x (1000 m/ 1 km) x (1 hour / 3600 s) = 27.78 m/s
Then divide the difference by time.
acceleration = 27.78 m/s / 10.5 s = 2.65 m/s²
(2) In terms of g,
x = 2.65 / 9.80 = 0.27
Therefore, the answer would be,
a = 0.27g
