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2 years ago

Determine the acceleration of a raptor that reaches 25 m/s from rest in 6.5 s.

Physics

1 answer:

REY [17]2 years ago

8 0

Answer:

3.8 m/s²

Explanation:

Average acceleration is the change in velocity over change in time.

a = Δv / Δt

a = (25 m/s − 0 m/s) / 6.5 s

a ≈ 3.8 m/s²

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A cart is given an initial velocity of 2 m/s and experiences a constant acceleration of 2 m/s2. What is the magnitude of the car

muminat

Answer: 48 m

Explanation:

Since we are dealing with constant acceleration, we can use the following equations:

$V=V_{o}+a.t$ (1)

$V^{2}={V_{o}}^{2}+2ad$ (2)

Where:

$V$ is the cart’s final velocity

$V_{o}=2 m/s$ is the cart’s initial velocity

$a=2 m/s^{2}$ is the cart's acceleration

$t=6 s$ is the time

$d$ is the cart's displacement

So, firstly we have to find $V$ from (1):

$V=2 m/s+(2 m/s^{2})(6 s)$ (3)

$V=14 m/s$ (4)

Isolating $d$ from (2) and substituting (4):

$d=\frac{V^{2}-V_{o}}^{2}}{2a}$ (5)

$d=\frac{(14 m/s)^{2}-(2 m/s)}^{2}}{2(2 m/s^{2})}$ (6)

Finally:

$d=48 m$

5 0

3 years ago

Which of the following temperatures is the highest ? A)100C B)100F C)100K ?

Rashid [163]

Show a common scale and convert each choice to it ( I will choose Celsuis):

A)100C

B) 100F = 37 C

C) 100 - 273 = -173 C

so the answer is A

4 0

3 years ago

Consider the following research question, “When light passes into a medium where it slows down, does it bend toward the normal o

yulyashka [42]

Answer:

Yes

Explanation:

7 0

2 years ago

A force of 100.0N accelerates a 5.0 kg box at 15.0 m/s^2 along a level surface. Find the coefficient of sliding friction for the

Phantasy [73]

By balancing the force, we get :

100 - Frictional Force = ma

100 - μmg = ma

100 - μ(5)(10) = (5)(15)

50μ = 25

μ = 0.5

Distance travelled by box in 5 seconds is :

$d = ut + \dfrac{at^2}{2}\\\\d = 0 + \dfrac{15\times 5^2}{2}\\\\d = 187.5\ m$

Hence, this is the required solution.

3 0

2 years ago

Object A is negatively charged. Object A and Object B

Dvinal [7]

Answer:B=Negative C=Positive D=Positive

Explanation:objects that repel each other means they have the same polarity. objects that attract have the opposite polarity A is negatively charged if A and B repel then A and B are both negative. B is negatively charged if B and C attract then they have reverse polarity which makes C positively charged. C is positive if C and D repel then that means that C and D have the same polarity making D positively charged.

4 0

2 years ago