Answer:C) car X
Explanation:
Given
All the cars have identical Engine thus Force Produced by car X will be equal to Y and Z
and
Since Car X is most massive so acceleration associated with it will be minimum
acceleration of car X is minimum thus it will travel farthest
Answer:
a) F = 9.69 N
b) F = 10.88 N
c) F = 8.51 N
Explanation:
a) The kinetic frictional force when the elevator is stationary is the following:
Where:
F(k) is the kinetic frictional force
N is the normal force = mg
m: is the mass = 2.60 kg
g: is the gravity = 9.81 m/s²
μ(k) is the coefficient of kinetic friction = 0.380
b) When the elevator is accelerating upward with acceleration "a" equal to 1.20 m/s²
The normal is equal to mg plus ma because the elevator is accelerating upward
c) When the elevator is accelerating downward with a =1.20 m/s² we can find the kinetic frictional force similar to the previous case:
I hope it helps you!
There is about equal amounts of each.
Answer: 0.003 N
Explanation: Force (F) = Mass (m) * Acceleration (a)
Where acceleration is the rate of change of velocity (v/t)
v = 50 cm/s
t = 2 s
M = 12 g = 0.012 kg
a = v/t = 50/2 = 25 cm/s^2 = 0.25m/s^2
Hence F = m * a = 0.012 * 0.25 = 0.003 N
Answer: 90N
Explanation:
When resolving in a circular path we talk about Centripetal force
Mathematically;
Centripetal force (f) = mv^2 / r
Where m = mass
V = velocity
r = radius
Therefore;
50 x 3^2 / 5
= 90N