questions on motion

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Claflin University

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HELLO, need help answering about 6 questions on motion newton law. I have death in my family no time for work this week. this is in a physical Science Class

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A 1200 kg car goes from 15 m/s to 30 m/s in 10 s. What is the average force acting upon it? Remember your units. F = ma a = final velocity - initial velocity time Which one of Newton's laws of motion applies to the following situation? "A stationary chair in a room" Which one of Newton's laws of motion applies to the following situation? "A bowling ball and a baseball shot from a cannon are moving with the same velocity but the bowling ball needs a greater force to stop it than the force needed to stop the baseball. Which one of Newton's laws of motion applies to the following situation? "As a person swims, he/she pushes the water in the backward direction with his/her hands and the water pushes the person in the forward direction with an equal force Re-write the sentence below with the missing word. According to Newton's second law of motion, acceleration is equal toAnswer divided by mass. Re-write the sentence below with the missing word. The curved path that an object takes when it is thrown upward at an angle to the ground is called a Re-write the sentence below with the missing word. The vector quantity that includes both speed and direction is called
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Explanation & Answer

The solutions are ready, please ask if something is unclear.The questions 2 and 6 may have different answers.docx and pdf files are identical

1. 𝐹 = 𝑚𝑎 = 𝑚𝑎𝑠𝑠 ∙

𝑓𝑖𝑛𝑎𝑙 𝑣𝑒𝑙𝑜𝑐𝑖𝑡𝑦 − 𝑖𝑛𝑖𝑡𝑖𝑎𝑙 𝑣𝑒𝑙𝑜𝑐𝑖𝑡𝑦
𝑡𝑖𝑚𝑒

= 1200 ∙

30−15
10

= 120 ∙ 15 = 𝟏𝟖𝟎𝟎 (𝑵).

2. Which one of Newton's laws of motion applies to the following situation?
"A stationary chair in a room"

Actually, all three.
The First: because all forces (gravitational and reaction) are compensated, the chair
resides in rest.
The Second: 𝐹 = 𝑚𝑎, 𝐹 = 0, 𝑎 = 0.
The Third: the force which acts from the floor to the chair and the force that acts from the
chair to the floor have the same magn...


Anonymous
Really great stuff, couldn't ask for more.

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