Ans. 5 X 10^6
Explanation:
Here,^ represents 6 times 10 and 5 is multiplied. That is 5000 000.
Hope this helps
Answer:
Explanation:
v² = u² + 2as
s = (v² - u²) / 2a
s = (29.88² - 6.73²) / (2(5.22))
s = 81.1802203065...
s = 81.18 m
Answer:
The weight that will balance the meter stick at 70 cm mark is 35N
Explanation:
Given;
first weight at 15 cm mark, W₁ = 20 N
second weight at 70 cm mark, W₂ = ?
A sketch of the question in diagram form;
The center of gravity of the meter stick is 50 cm
15cm 50cm 70cm
0---------------------------------------Δ------------------------------------------100cm
↓ ↓
20N W₂
<------------------>|<--------------->
35cm 20cm
Take moment about the pivot;
Clockwise moment = anticlockwise moment
W₂(20cm) = 20N(35 cm)
W₂ = (20 x 35) / (20)
W₂ = 35 N
Therefore, the weight that will balance the meter stick at 70 cm mark is 35N
Answer:
The velocity of the car after 3 seconds is 5.5 m/s
Explanation:
Mathematically, we can get the acceleration of the car first;
F = m•a
where m is the mass, F is the applied force and a is the acceleration
from the question;
F = 1500 N , m = 4500 kg and a = ?
By rewriting the formula;
a = F/m
a = 1500/4500 = 1/3 m/s^2
Now to get the velocity of the car after 3 seconds;
Mathematically;
V = U + at
where V is the final
velocity, U is the initial velocity,
From the question, we are trying to get V;
where U = 4.5 m/s
a = 1/3 m/s^2 and t = 3 seconds
Thus;
V = 4.5 + (1/3)(3)
V = 4.5 + 1
V = 5.5 m/s
