Answer:
255 [m].
Explanation:
1) the formula is (d - requred distance, V₀ - initial velocity, t - elapsed time, a - deceleration):
2) according to the formula above the required distance is:
d=10*30-0.5*0.1*900=300-45=255 [m].
Answer:
Friction
Explanation:
Because the brake pad is rubbing alongside the wheel to slow the body of the car down
The radar device determines the vehicle's instantaneous speed.
I would argue that the purpose of the device is not to determine
whether individuals are driving safely. They only determine whether
individuals are driving within legal speed limits. There's much more
to 'safe' driving than that, but the radar gun can't detect it.
Explanation:
Using,
S = vi*t + 1/2*a*tr^2
vi = initial velocity = 0 m/s
S = 1/2 * 9.8 * tr^2
= 4.9tr^2.
S = vf * (ta - tr)
4.9tr^2 = 330 * (9.3 - tr)
4.9tr^2 - 3069 + 300 * tr)
Using general quadratic equation,
tr = 8.93 s.
S = 4.9 * (8.93)
= 390.75 m.
B.
Therefore,
S = 4.9 * (9.3)^2
= 423.8 m.
The height of the cliff would be overestimated.
Answer:
Explanation:
Given
velocity of mug with which it leaves the bar is 1.7 m/s
Also
height of bar=1 m
Considering motion in vertical direction
here
t=0.451 s
so horizontal distance traveled is
here a=0
speed of mug will be combination of horizontal and vertical velocity
thus
for direction
is with x axis in clockwise sense