This can be solve by using the formula
x = (v^2) (sin 2a) / gwhere v is the intial velocitya is the angle of trajectoryg is the acceleration due to gravity (9.8 m/s2)
x = (15.5^2) (sin 2(34) / 9.8x = 22.73 m
Answer:
125.44 N
Explanation:
From the question given above, the following data were obtained:
Weight on earth = 784 N
Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²
Weight on moon =?
Next, we shall determine the mass of the person. This can be obtained as follow:
Weight on earth (Wₑ) = 784 N
Acceleration due to gravity of earth (gₑ) = 10 m/s²
Mass (m) =?
Wₑ = m × gₑ
784 = mass × 10
Divide both side by 10
Mass = 784 / 10
Mass = 78.4 Kg
Finally, we shall determine the weight of the person on moon. This can be obtained as follow:
Mass (m) = constant = 78.4 Kg
Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²
Weight on moon (Wₘ) =?
Wₘ = m × gₘ
Wₘ = 78.4 × 1.6
Wₘ = 125.44 N
Therefore, the weight of the person on moon is 125.44 N.
Answer:
F = 1094.4 N
Explanation:
From impulse - momentum theorem, we now that ;
Impulse = momentum
Where;
Formula for impulse = force (F) × time(t)
Momentum = mass(m) × velocity(v)
Now, we are given;
Mass of swimmer; m = 72 kg
Speed; v = 3.8 m/s
Time; t = 0.25 s
Thus;
F × t = mv
F = mv/t
F = (72 × 3.8)/0.25
F = 1094.4 N
This value of force is the magnitude of the average horizontal force by diver on the raft.
Barometer is the instrument that is used to measure air pressure. The correct option among all the options given in the question is option "c". A barometer is a scientific instrument that is used in meteorology for measuring the pressure in the atmosphere. This instrument is made of a long glass tube that is open in one end and closed in the other. It contains mercury and is placed invertedly in a bigger container containing mercury.