Explanation:
distance and time both are scaler quantity
Answer:
The vector form is as shown in the attachment
Explanation:
The figure as shown in the diagram, indicates that the car is moving along the road at a constant speed. Centripetal acceleration comes into play for an object moving in a circular motion at uniform speed. The centripetal acceleration is the acceleration experienced by an object while in uniform circular motion.
Mathematically from centripetal acceleration; a = v2/r
The equation shows that there is an inverse relationship between the acceleration and the radius of curvature as such the radius of curvature at the point A will be more than the radius of curvature at the point C, this shows that the centripetal acceleration at point C will be more than the centripetal acceleration at point A.
The attachment shows the figure and the representation in vectorial form.
As the artic fox has very small ears it helps prevent the heat from his body from escaping quickly.
The bigger the ears the faster the heat escapes basically.
So it can be easily absorbed into the blood steam.
Answer:
52,94N
Explanation:
Frictional force is the opposing force that is created between two surfaces that try to move in the same direction or that try to move in opposite directions. The main purpose of a frictional force is to create resistance to the motion of one surface over the other surface.
Calculation:
Le the value of frictional force be Fk, therefore acceleration a = (F- Fk)/m
where :
F is the applied force
m the mass of the cart
a = (F- Fk)/m = 0.8
F - Fk = 0.8m
Fk = F - 0.8m
Fk = 56.3 - (0.8×4.2)
Fk = 52.94 N
The magnitude, in Newtons, of the net frictional force is therefore 52.94N