A car weighing 8000N is traveling at 45 m/s on a perfectly flat, frictionless road. If the driver slams on the brakes, how far w
1 answer:
You might be interested in
Answer:
4.55
Explanation:
The terminal speed of a diver is given by:
Answer:
a) t =12[s]; b) x = 348[m]
Explanation:
We can solve this problem using the following kinematics equations:
a)
where:
vf = final velocity = 12 [m/s]
vo= initial velocity = 6 [m/s]
a = acceleration = 0.5[m/s^2]
t = time [s]
Now clearing the time t, we have:
b)
We can calculate the displacement for the first 12 [s] then using the equation for the constant velocity we can calculate the other displacement for the 20[s].
The we can calculate the second displacement for the constant velocity:
x = x1 + x2
x = 108 + 240
x = 348[m]
Answer
given,
x(t) = A t + B t²
A = -4.1 m/s
B = 5.4 m/s²
a) velocity of the particle is equal to the differentiation of Position w.r.t. time
the above equation gives the function of velocity.
b) time at which velocity of particle is zero
v = -4.1 + 10.8 t
inserting v = 0 and calculating v
0 = -4.1 + 10.8 t
10.8 t = 4.1
t = 0.38 s
time at which velocity is zero is equal to 0.38 s.