Answer:
2 seconds
Explanation:
Acceleration = a = -7 m/s²
u = Initial velocity = 15 m/s
v = Final velocity = 0
Distance the car will travel after hitting the brakes = s
Distance to the deer = 46 m = s₁
Time it takes the car to stop = t
From equation of motion
Maximum reaction time would be 2 seconds.
Answer:
t = 1.33 seconds
Explanation:
Given that,
The mass of the ball, m = 5 kg
Initial speed, u = 8 m/s
Final speed, v = 12 m/s
Force, F = 15 N
We need to find the time for long the force is applied. Let the time be t. The force is given by :
So, the force is applied for 1.33 seconds.
Curved line
Explanation:
Acceleration of motion is represented by a curved line on a non-linear distance-time graph.
The acceleration of a non-linear motion is depicted using a parabola which is a curve. This implies that the velocity is constantly changing and the distance covered by the body is also changing with equal amount of time.
- A plot of this will give a parabola. This can be further established using one of the equations of motion below:
x = u + at ²
This is a quadratic function where:
x is the distance
u is the initial velocity
t is the time
a is acceleration
A quadratic function gives a curved line which is a parabola.
Learn more:
Acceleration brainly.com/question/10932946
#learnwithBrainly
Answer:
- path differnce = 2.18*10^-6
- 1538 lines
Explanation:
- The path difference for the waves that produce the pattern of diffraction, is given by the following formula:
(1)
d: separation between slits = 0.50mm = 0.50*10^-3 m
θ: angle of a diffraction = 0.25°
Then, the path difference is:
- The maximum number of bright lines are calculated by using the following formula:
(2)
m: order of the bright
λ: wavelength = 650nm
The maximum bright is calculated for an angle of 90°:
The maxium number of bright lines are twice the previous result, that is, 1538 lines