Lessening frictions Means it harder to stop
1) Inertia causes the person to keep going when the vehicle stops, so if you're not wearing a seatbelt you'll keep going until you hit something. Whether that be the seat ahead, the windshield, or the road.
2) It takes 4 times as long to stop a vehicle going twice the speed.
3) A large vehicle takes longer to stop because there's more mass and more kinetic energy there.
4) To prepare to enter sharp curves, a driver should slow down before turns
Answer:
<h2>18.51 J</h2>
Explanation:
The kinetic energy of an object can be found by using the formula
m is the mass
v is the velocity
From the question we have
We have the final answer as
<h3>18.51 J</h3>
Hope this helps you
Answer:
h = 61.5m
Explanation:
Initial speed = 34.7m/s
Net force =
F= -mg Sin 10
We are finding distance moved by this skier upon the hill.
ma = - mgSin10
a = -gSin10
g = 9.8
Sin 10 = 0.1564
a = -9.8(0.1564)
a = -1.53
This is the acceleration
(-34.7)² = 2as
= -34.7² = (-2x1.53)s
-1204.09 = -3.06s
We find the value of s
S = -1204.09/-3.06
S = 393.5m
Sin10 = h/393.5m
0.1564 = h/393.5m
h = 0.1564x393.5m
h = 61.5
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