A baseball accelerates downward at 9.8 m/s2. the force pulling the ball downward is 1.4 n. what is the mass of the baseball? sho
w your work.
2 answers:
Answer:
mass (m) = 0.1429 kg
Explanation:
Given that:
A baseball accelerates downward at 9.8 m/s²
acceleration (a) = 9.8 m/s²
the force pulling the ball downward is 1.4 N
Force (F) = 1.4 N
We are asked to find the mass;
to do that, wwe go by the formula
Force = mass × acceleration
1.4 N = mass (m) × 9.8 m/s²
mass (m) =
mass (m) = 0.1429 kg (since 1 N/(m/s²) = 1 kg)
You might be interested in
Answer:
15.64 KN
Explanation:
mass of the elevator cab with a single occupant= 2300 kg
acceleration relative to the cab = 6.80 m/s^2
acceleration of the coin relative to the cab in the opposite direction of motion of cab so we can consider it as a= -6.80 m/s^2
The acceleration of elevator cab relative to the ground
now we can say that
=-6.80+ a_{eg}= -9.8
[tex]a_{eg}=-9.8+6.80=-3.8
The forces that act on elevator cab are tension and gravitational, applying newtons second law
T- mg= ma_{eg}
Then the tension in the cable is
T= 2300(-3.8)+2300×9.8= 15640 N= 15.64 KN
therefore tension in the string will be 15.64 KN