Answer:
The answer to your question is: D.
Explanation:
Distance refers to the amount of space between two points, it is a scalar quantity.
Displacement refers to the space between two points, measure from the minimum path linking them, it is a vector quantity.
I'm not agree with these answers, because the total distance is approximately 500km.
A) The distance traveled is 300 km. This answer is not correct.
B) Distance is 300 km and displacement is 0 km. This answer is not correct because the displacement is also 500 km.
C) Distance is 300 km/hour and displacement is 300 km.
300 km/h is a measure of speed not of distance, this option is wrong.
D) Both distance traveled and displacement are 300 km. I think this is the correct answer because distance and displacement measure the same. but I think both measure 500 km.
Answer:
μk = (Vf - Vc)/(T×g)
Explanation:
Given
Vi = initial velocity of the car
Vf = final velocity of the car
T = Time of application of brakes
g = acceleration due to gravity (known constant)
Let the mass of the car be Mc
Assuming only kinetic frictional force acts on the car as the driver applies the brakes,
The n from Newtown's second law of motion.
Fk = Mc×a
Fk = μk×Mc×g
a = (Vf - Vc)/T
Equating both preceding equation.
μk×Mc×g = Mc × (Vf - Vc)/T
Mc cancels out.
μk = (Vf - Vc)/(T×g)
Ruminants are the mammals that can digest cellulose from plant and chew the cud
aii Cow and goat
bi A force is a push or pull upon an object resulting from the object interaction with another object
bii 1 Changes it's shape or size
2 To start moving
3 To stop moving
4 To accelerate or decelerate
biii Proton neutron and electron
Answer:
Acceleration is 8.45 and the tension is 2.775
Explanation:
Lets apply the equation F=ma for vertical block,
5-T= 0.5a
foe the frictional force acting on the object,
f=0.11×5 (consider equation no.1)
=0.55N
Applying F=ma for the block which is on surface,
T-0.55=0.5a (consider as equation no.2)
no.1=no.2
5.55=2T
T=2.775
by equation no.1,
4.225=0.5a
a=8.45
