If the ball travels 19.6 meters every second and it travels for 3 seconds, obviously you have to multiply the velocity by 3:
19.6 x 3= 58.8m/s
Answer:
Acceleration of the car,
Explanation:
Given that,
Initial speed of the car, u = 0 (at rest)
Final speed of the car, v = 40 m/s
Distance covered, s = 100 m
We need to find the acceleration of the car. It can be calculated using third equation of motion as :
a is the acceleration of the car
So, the acceleration of the car is . Hence, this is the required solution
Moment about D=0
or,T1*6a-5w*3a-9w*2a=0
T2+T1=5w+9w
The best statement would be number 3. Sound waves move perpendicular to the medium particles.
Answer:
Speed Unchanged.
Explanation:
As work is defined as a product of force over a distance. If the distance in altitude is constant = 500km, there's 0 change in distance and force, no work would be done by the gravitational force.
Since potential energy of the satellite is unchanged, unless there's additional internal energy source, the kinetic energy would remain unchanged, so would its speed.