Answer:
1.5 hours
Explanation:
Using the equation t=d/v to solve for time:
t=75 miles ÷ 50 miles per hour = 1.5 hours
Answer:
Explanation:
Acceleration acts for 9 s and deceleration acts for 12 - 9 = 3 s.
Total distance covered = 990 m
initial velocity u = o
Distance covered while accelerating
s₁ = 1/2 a 9² where a is the acceleration
= 40.5 a
final velocity after 9 s
v = at = 9a
while decelerating
v² = u² - 5 x s₂
0 = (9a)² - 5 s₂
s₂ = 16.2 a²
Distance covered while decelerating = 16.2 a²
s₁ + s₂ = 990
40.5 a + 16.2 a² = 990
16.2 a² + 40.5 a - 990 = 0
a = 6.5
The equation that describes the graph is y = 16.7x + 150.
<h3>What is the equation?</h3>
We have been given the graph of a certain function data set in physics. We know that the graph is the representation of data on cartesian coordinates. In this case, we are asked to find the equation of the graph in the form; y=mx+b
m = slope of the graph
b = intercept of the graph.
To obtain the slope;
m = y2 - y1/ x2 - x1
m = 400 - 200/ 16 - 4
m = 200/ 12
m = 16.7
Then we can see from the graph that the y - intercept is 150. Having these data, the equation that could describe the graph is now;
y = 16.7x + 150
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Scientific Notation for
:

Hope this helps!

Answer:
c. 23 m/s
Explanation:
= Angle of banking = 45°
r = Radius of turn = 52 m
g = Acceleration due to gravity = 9.81 m/s²
v = Velocity of car
As the car is tilted we have the relation

The velocity of the car is 23 m/s if the car is not slipping