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3 years ago

Why is the answer B and not E?

Physics

2 answers:

makkiz [27]3 years ago

8 0

Answer: B

<u>Explanation:</u>

E shows the direction of the ball but the question asks about the direction of the STICK, which is the opposite of the ball.

Margarita [4]3 years ago

5 0

Explanation:

The ball's horizontal velocity changes from vi to 0, so the acceleration is negative, meaning the force component must point to the left.

The ball's vertical velocity changes from 0 to vf, so the acceleration is positive, meaning the force component must point up.

So you're looking for a force that points to the left and up, where the horizontal component is greater than the vertical component.

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I need help on 4 and 5 please

Ivan

Answer:

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2 years ago

If the distance d (in meters) traveled by an object in time t (in seconds) is given by the formula d=a+bt2, the si units of a an

ss7ja [257]

Distance , d = a+b $t^2$

The unit of d is in meter and t is in seconds.

So the unit of a a must be meter.

Now we have unit of b $t^2$ is meter.

So unit of b* $second^2$ = meter

Unit of b = meter/ $second^2$

So unit of a = m and unit of b = m/ $s^2$ .

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2 years ago

Define heat capacity of a substance.<br>Write the S.I unit of heat capacity.

creativ13 [48]

Define heat capacity of a substance:

The heat capacity of a substance can be defined as the amount of heat required to change its temperature by one degree.

Write the S.I unit of heat capacity:

Joule per Kelvin

$\: \: \:$

Joule per Celsius

$\: \: \:$

-,-

6 0

1 year ago

What type of charge does an electron have?

GarryVolchara [31]

An electron has a negative charge. Hope this helps.

4 0

2 years ago

Read 2 more answers

(P.E) Physical Activity and Fitness.......,,,

Greeley [361]

Unscrambling

1. resting heart rate

2. overload

3. workout

4. specificity

5. cool-down

6. progression

7. warm-up

8. the last one can only be instance, but there was a typo on the paper.

4 0

2 years ago