Physics, 23.05.2020 09:58 auty2925

What is the size of the smallest vertical plane mirror in which a 5.0 ft tall kangaroo standing erect can see her full-length image?

2.0 ft

2.5 ft

5.0 ft

7.5 ft

Answers: 3

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Answer from: dfrtgyuhijfghj3496

Explanation:

go see a pic with my mouth to get it over there was homework to call me if I can I can hear it bro I'm dillo of me I hope to see if it would work with you to the person I would love with the same thing I was gonna to do with it I can send a picture it's for you guys and he will get my job done in time I think of it like the last few weeks lol but I'm just gonna start working out with you to the adio of u up here is very important that we have been working in his room for me in my mom and then we are u doing well I'm better off with

Answer from: Quest

Iwould say a is accurate

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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What is the size of the smallest vertical plane mirror in which a 5.0 ft tall kangaroo standing erec...