B. breaking a mirror
C. cutting wood
D. popping popcorn
Thanks :)
Popping popcorn action will result in a product with new chemical properties, therefore the correct answer for the given problem is option D.
In a chemical reaction, one or more components referred to as reactants—are changed into one or more other substances—also referred to as byproducts.
A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
The energy of the reactant is greater than the energy of the product because the extra energy is released during an exothermic reaction.
Popcorn would be the best choice since it would transform the pre-popped kernels into something else whereas the other options would merely change their outward look.
Thus, popping popcorn action will result in a product with new chemical properties, therefore the correct answer for the given problem is option D
Learn more about chemical reactions here,refer to the link ;
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b.it will travel striaight line but eventually slow down
c.it will continue to speed up forever
d.it will slow down and turn
2.a car accelerates down the road .what is the reaction to the tires pushing on the road?
a.the car in the tires moving the car
b.the masses of the car pushing on the tires
c.the road pushing on the tires
d.the road moving away from the tires
The kinetic energy of the squirrel with a mass of 0.9 Kg running with a speed of 4 m/s is 7.5 J.
Kinetic energy of an object is a form of energy generated by virtue of the motion of the object. Kinetic energy is dependent on the mass and velocity of the body.
When a body starts to move its potential energy starts to convert to kinetic energy and the kinetic energy will be maximum at the highest speed. When the object slow down and pause in a position it gains potential energy again.
The kinetic energy KE = 1/2 mv²
Given mass = 0.9 Kg
velocity = 4 m/s.
KE = 1/2 0.9 Kg × 4² m/s
= 7.5 J
Therefore, the kinetic energy of the squirrel is 7.5 J.
To find more on kinetic energy, refer here:
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Answer:
A). Option A
B). Option B
C). Option B
Explanation: