According to newton's second law of motion, when an object is acted on by an unbalanced force, how will that object respond?

The flight path of a jet aircraft as it takes off is defined by the parmetric equations x=1.25 t2 and y=0.03 t3, where t is the

Tamiku [17]

Answer:

(a) $X=2000m$

(b) $Y=1920m$

(c) $v=175.3m/s$

(d) $a=7.6m/s^2$

Explanation:

$x=1.25 t^2$

and

$y=0.03 t^3$

Kinematics formules:

$v_{x}=dx/dt=2.5t\\$

$a_{x}=dv_{x}/dt=2.5\\$

$v_{y}=dy/dt=0.09t^2\\$

$a_{y}=dv_{y}/dt=0.018t\\$

at T=40s:

(a) $X=1.25*(40)^2=2000m$

(b) $Y=0.03*(40)^3=1920m$

(c) $v=\sqrt{v_{x}^2+v_{y}^2} =\sqrt{(2.5*40)^2+(0.09*40^2)^2} =175.3m/s$

(d) $a=\sqrt{a_{x}^2+a_{y}^2} =\sqrt{(2.5)^2+(0.18*40)^2} =7.6m/s^2$

4 0

3 years ago

Which of the following factors affect the pressure of an enclosed gas?

dimulka [17.4K]

Answer:

D. All of the above.

Explanation:

PV=nRT

3 0

3 years ago

The resistance of a wire depends upon the material's resistivity and the length and cross‑sectional area of the wire. What will

andriy [413]

Answer:

R' = 4R

The resistance will become 4 times the initial value.

Explanation:

The resistance of a wire at room temperature, is given by the following formula:

R = ρL/A ----------- equation 1

where,

R = Resistance of wire

ρ = resistivity of the material

L = Length of wire

A = Cross-sectional area of wire

Now, if the length (L) is multiplied by 4, then resistance will become:

R' = ρ(4L)/A

R' = 4 (ρL/A)

using equation 1:

<u>The resistance will become 4 times the initial value.</u>

6 0

4 years ago

1 point

Yuliya22 [10]

PE= 3kg x 10N/kg x 10m
= 300J

8 0

3 years ago

Sally is going shopping with her friend Susan at the mall, which is located 10 kilometers away from her house. She drives half-w

nasty-shy [4]

Total distance between Sally's house and mall = 10 kilometers

Distance covered during half way drive = $\frac{10}{2}$ Kilometers

Now, she goes back to her home.

Distance covered going back home = $\frac{10}{2}$ Kilometers

Now, she drives from home to mall.

Distance covered from Sally's home to mall = 10 kilometers

Hence, the total distance Sally traveled = 5 + 5 + 10

Total distance Sally traveled = 20 kilometers

Hence, the answer is 20 kilometers

5 0

3 years ago

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