Force = (mass) x (acceleration)

Mass = (force) / (acceleration)

There was 150N of force in one direction and 100N of 'force' in
the other direction. The net force on the object was (150 - 100) = 50N .

Acceleration = (change in speed) / (time for the change)
= (10 m/s) / (5s) = 2 m/s²

Mass = (net force) / (acceleration) = (50 N) / (2 m/s²) = 25 kilograms

7 0

3 years ago

A speeding car is pulling away from a police car. The police car is moving at 30 m/s. The radar gun in the police car emits an e

Gekata [30.6K]

Answer:

65.625 m/s

Explanation:

$F=20\times 10^9 Hz$

$\Delta F=F_r-F_t=4750 Hz$

c = Speed of light = 3×10⁸ m/s

Relative speed

$v=\frac{\Delta F}{2F}\times c\\\Rightarrow v=\frac{4750}{2\times 20\times 10^9}\times 3\times 10^8\\\Rightarrow v=35.625\ m/s$

Relative speed = 35.625 m/s

Velocity of speeder = Velocity of police car + Relative speed

⇒Velocity of speeder = 30 + 35.625 = 65.625 m/s

∴ Velocity of speeder is 65.625 m/s

6 0

4 years ago

light of wavelength 587.5 nm illuminates a slit of width 0.75 mm. at what distance from the slit should a screen be placed if th

Liono4ka [1.6K]

1.085m

Explanation:

Using

a= lambda/sinစ

Sinစ= (587.5*10^-9) x 0.75*10^-3

= 0.000783

Sinစ=0.875*10^-3/d

0.000783= 0.875/d

d= 1.085m

6 0

3 years ago

diego is a landscaper. he buys 2.6 tons of decorative stones for $3,861. what is the cost of the stones per month?

Aleks04 [339]

Answer: Well This is a tricky question but I got it 6,461

Explanation:

3 0

3 years ago

In a circuit, electrons flow from _____ terminal to the ____ terminal.​

In a circuit, electrons flow from _ terminal to the terminal.