Answer:
60 m
Explanation:
Case 1:
v₀ = initial speed = 25 mph = 11.2 m/s
v = final speed = 0 m/s
a = acceleration = ?
d = stopping distance = 15 m
using the kinematics equation
v² = v₀² + 2 a d
0² = 11.2² + 2 a (15)
a = - 4.2 m/s²
Case 2 :
v₀ = initial speed = 50 mph = 22.4 m/s
v = final speed = 0 m/s
a = acceleration = - 4.2 m/s²
d = stopping distance = ?
using the kinematics equation
v² = v₀² + 2 a d
0² = 22.4² + 2 (- 4.2) d
d = 60 m
Answer:
Explanation:
We are asked to find the final velocity. We are given the acceleration, time, and initial velocity, so we can use the following kinematics formula.
In this formula, is the final velocity, is the initial velocity, is the acceleration, and is the time.
The bicycle has an initial velocity of 5.0 m *s⁻¹ or m/s, acceleration of 2 m/s², and a time of 5 seconds.
Substitute the values into the formula.
Solve inside the parentheses.
Add.
The units can also be written as:
The bicycle's final velocity is 15 meters per second.
B strength training I think that’s the answer
Answer:
Ft = 3650 N
Explanation:
The car exerts a force on the truck and truck has a friction force, using Newton's second law we can find the net force is the difference between the two
Ft = F-fr
Ft = 4420-770
Ft = 3650 N
Directed from the car to a truck
. The system acceleration is
Ft = (m₁ + m₂) a
a = Ft / (m₁ + m₂)
a = 3650 / (1300 +2160)
a = 1.05 m / s²
Answer:
1600 N
Explanation:
pascals principle says..
so lets do
so multiply one half (2/4 simplified) by 3200
1600 is equal to x
1600 N
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