Answer:
b
Step-by-step explanation:
I Think B is the right answer
Answer:
10+ x
Step-by-step explanation:
Follow me please for answering the question
=−640x10+1280x9+19904x8−40728x7−144488x6+323904x5−162304x4+1024x3+2048x2
step by step
(2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x(x+4)
=((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(x+4)
=((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(x)+((2x+8x2+3x−4x(x−4)(x−1)(20)x+4)(2)(x+4)(x−4)(2)x(x−1)(2)x)(4)
=−640x10+3840x9+4544x8−58904x7+91128x6−40608x5+128x4+512x3−2560x9+15360x8+18176x7−235616x6+364512x5−162432x4+512x3+2048x2
=−640x10+1280x9+19904x8−40728x7−144488x6+323904x5−162304x4+1024x3+2048x2
Answer:
acceleration ![\approx 2.78\,\,\frac{m}{s^2}](https://tex.z-dn.net/?f=%5Capprox%202.78%5C%2C%5C%2C%5Cfrac%7Bm%7D%7Bs%5E2%7D)
Step-by-step explanation:
The acceleration is the change in velocity per unit of time.
Therefore to have this rate in appropriate units that can combine, we re-write the change from 0 to 70 km/h in meters per second using:
![70 \frac{km}{h} = \frac{70000}{3600} \frac{m}{s}](https://tex.z-dn.net/?f=70%20%5Cfrac%7Bkm%7D%7Bh%7D%20%3D%20%5Cfrac%7B70000%7D%7B3600%7D%20%5Cfrac%7Bm%7D%7Bs%7D)
so in this case the acceleration becomes:
![accel=\frac{change\,\,vel}{change\,\,time} =\frac{70000m}{3600\,*7\,s^2} \approx 2.78\,\,\frac{m}{s^2}](https://tex.z-dn.net/?f=accel%3D%5Cfrac%7Bchange%5C%2C%5C%2Cvel%7D%7Bchange%5C%2C%5C%2Ctime%7D%20%3D%5Cfrac%7B70000m%7D%7B3600%5C%2C%2A7%5C%2Cs%5E2%7D%20%5Capprox%202.78%5C%2C%5C%2C%5Cfrac%7Bm%7D%7Bs%5E2%7D)
I got all real numbers is it a multiple choice question