Answer:
The energy from food and then from plants and then from sun.
As sun is the ultimate source of energy.
Explanation:
Distance = 100 m, 1000m, marathon
As the distance is covered by the person, so the muscular energy is used and thus the energy comes form out food.
As we know that the energy can neither be created nor be destroyed it can transform from one form to another.
So, the energy form the food which we consume is converted into the kinetic energy as we run.
Answer:
C
<span>
An
axe is a mechanical device with two inclined planes, thick at one end and
tapers to a thin edge and when it is used to chop wood, the axe blade acts as a
wedge and changes the direction of the input force. When the axe blade
penetrates the wood, a portion of the downward force of the blade is changed to
sideways forces, which are perpendicular to each external of the blade and the sideways forces
cause the wood to split in contrasting directions.</span>
B. Can be hurried up once you have it memorized.
Explanation:
A good stretching routine should not be hurried because it has been memorized. This is a bad stretching habit and should not be encouraged in daily routines.
- Stretching helps to flex the muscle gently after a period of inactivity or over activity.
- It ensures that our muscles are well straightened out and perfectly in shape.
- A full body stretch should last a minimum of about five minutes.
- Stretching helps to improve tissue elasticity and their flexibility
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Answer:
The force that is exerted when a shopping cart is pushed is a type of push force, supplied by the muscles of the cart pusher's body.
The forces that causes a metal ball to move toward a magnet is a type of pull force that is as a result of the magnetic field forces.
Explanation:
Forces are divided into push forces that tends to accelerate a body away from the source of the force, and pull forces that accelerates the body towards the force source.
Examples of push forces includes pushing a cart, pushing a table, repulsion of two similar poles of a magnet etc. Examples of pull forces includes a attractive force between two dissimilar poles of a magnet, pulling a load by a rope, a dog pulling on a leash etc.
I think you can just sub the values in? unless the qn is asking for smth else?
