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Paul [167]
3 years ago
12

How long does it take for a truck accelerating at 1.5 m/s^2 to got from rest to 75 km/hr

Physics
1 answer:
Free_Kalibri [48]3 years ago
6 0

Answer:

t = 13.9s

Explanation:

u = 0 m/s

v = 75 km/h

= 20.83 m/s

a = 1.5 m/s²

Using

v = u + at

20.83 = 0 + 1.5t

t = 13.9s

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In your physics lab you are given a 10.1-kg uniform rectangular plate with edge lengths 68.7 cm by 47.5 cm. Your lab instructor
VladimirAG [237]

Answer:

2.35 kgm^2

Explanation:

we take length 68.7 cm as x-axis and 47.5 cm as y-axis then the axis about which we have to find out moment of inertia will be z-axis.

moment of inertia about x-axis

I_x = ML^2 /3 = 10.1\times 0.4752 /3 = 0.7596 kg-m2

I_y = 10.1\times 0.6872 / 3 = 1.5889 kgm^2

by perpendicular axis theorem

I_z = I_x + I_y = 0.7596 + 1.5889 = 2.35 kgm^2

4 0
3 years ago
Parents have a major role in observing how young children grow at home. Create and discuss simple developmental monitoring tips
Rudik [331]

Answer:

by observation of their children

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2 years ago
Water towers store water above the level of consumers for times of heavy use, eliminating the need for high-speed pumps. How hig
Salsk061 [2.6K]

Answer:

So height will be 47.387 m

Explanation:

We have given gauge pressure P=4.63\times 10^5N/m^2

Density of water \rho =997kg/m^3

Acceleration due to gravity g=9.8m/sec^2

We know that pressure is given as P=\rho gh

4.63\times 10^5=997\times 9.8\times h

h=47.387m

So height will be 47.387 m

4 0
3 years ago
A ___ contains paired statements that can be used to identify organisms.
olganol [36]
Fungi.
A fungi contains paired statements that can be used to identify organisms.
6 0
3 years ago
A football player runs at 8m/s and plows into a 80kg referee standing on the field causing the referee to fly forward at 5m/s. I
madreJ [45]

The topic here is momentum.

When a collision is said to be elastic, it means that the colliding objects now travel at their own new, indivual and distinct velocities, often in different directions.

So we write that as,

(mass of football player x velocity of football player) + (mass of referee x velocity of referee) = (mass of football player x velocity of football player) + (mass of referee x velocity of referee)

(M × 8) + (80 × 0) = (M× 0) + (80 × 5)

8M = 400

M = 50 kg

4 0
3 years ago
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