What is a hypothesis?
a tentative explanation for an observation
Definition of hypothesis in US English:
A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
The velocity of the car would be 100 kilometer per hour.
Answer:
Part a)
so here the angle made by the string is independent of the mass
Part b)
Explanation:
Part a)
Let the string makes some angle with the vertical so we have force equation given as
so we will have
so here the angle made by the string is independent of the mass
Part b)
Now from above equation if we know that angle made by the string is
so we will have
Answer:
Explanation:
Given:
m=0.504kg
r=5.37mm
metal cylinde factor=2.31
we know that
Upward force = Downward force
Net force
initial speed of the racer is given as
after applied force the final speed is given as
now during this speed change the racer will cover total distance 185 m
so here we will use kinematics
now the force that chute will exert on the racer will be given as
B) here following is the strategy for solving it
1. first we used kinematics to find the acceleration of the car
2. then we used Newton's II law (F = ma) to find the force