Answer:
Explanation:
The first equation of motion given as,
v = u +at
Here, u is initial and v is final velocity and a is acceleration and t is time taken.
As per question car initial velocity, u = 90 m/s, final velocity, v =0 and time taken, t = 3.00 s.
Substituting these values in first equation of motion, we get
0 = 90 m/s + a×3.00 s
or,
Thus, the deacceleration of the car is
Answer: D Demetrius who sees distortions and colors when he looks at a face.
Explanation:
Answer:
Part a)
Part b)
Part c)
Explanation:
Part a)
As we know that it is having constant torque so here the time taken by it to accelerate is given as
Part b)
angular displacement is given as
Part c)
As we know that the angular deceleration produced by the brakes is given as
now we have
As we know that
so we have
Given: Mass m = 400 Kg; Height h = 3 m; g = 10 m/s²
Required: Work = ?
Formula: Work = Force x distance F = ma a = g F = mg
W = fd
W = mgh
W = (400 Kg)(10 m/s²)( 3 m)
W = 12,000 Kg.m²/s²
W = 12,000 J