How much force is required to accelerate a 2 kg mass at 3 m/s2

Answer:

196 J

Explanation:

PE = mgh

PE = (10 kg) (9.8 m/s²) (2 m)

PE = 196 J

Answer:

The gauge pressure is = 91.52 lb/in²

Explanation:

Given data,

The value of pressure in S.I unit, = 6.31 x 10⁵ N/m²

The conversion formula for SI unit into US Customary Units is given by,

                             1 N/m² = 1.45 x 10⁻⁴ lb/in²

Using the conversion formula, the new value of pressure becomes,

                        Pressure = 6.31 x 10⁵ X 1.45 x 10⁻⁴ lb/in²

                                         = 91.52 lb/in²

Hence, the gauge pressure is, ς = 91.52 lb/in²

The statement about speed and/or velocity which is true is: Velocity has both speed and direction.

Velocity refers to the rate of change in displacement (distance) with time. Velocity is a vector quantity and this simply means that, it has both magnitude (speed) and direction.

Mathematically, velocity is given by the formula;

On a related note, speed is a scalar quantity because it has magnitude but no direction.

However, both speed and velocity are measured in meters per seconds.

In conclusion, the relationship between speed and velocity is that velocity has both speed and direction.

Read more: brainly.com/question/17742679

Answer:

Velocity has both speed and direction.

Explanation:

speed is a part of velocity

The angular velocity of a clocks second hand, its minute hand, and its hour hand are 0.1047rad/s, 1.745 × 10⁻³rad/s and 1.454 × 10⁻⁴rad/s respectively.

Time period for second hand;

Time period for minute hand;

Time period for hour hand;

Now, we use the relation between angular speed and time period:

Where ω is the angular velocity and T is the time period in seconds.

For Second hand

For Minute hand

For Hour hand

Therefore, the angular velocity of a clocks second hand, its minute hand, and its hour hand are 0.1047rad/s, 1.745 × 10⁻³rad/s and 1.454 × 10⁻⁴rad/s respectively.

Learn more: brainly.com/question/8711708

Second hand:

1 rev per minute = (2π radians/minute) x (1 min/60sec) = π/30 rad/sec

Minute hand:

1 rev per hour = (2π radians/hour) x (1 hr/3600 sec) = π/1800 rad/sec

Hour hand:

1 rev per 12 hours = (2π rad/12 hr) x (1 hr/3600 sec) = π/21,600 rad/sec

As long as the clock is in good working order, and the hands are turning steadily at their normal rate, there is no angular acceleration.

Answer:

C

Explanation:

An object that is less than a focal length from a convex lens forms a virtual, magnified image. When the object is closer to a convex lens than the focal point, its rays do not pass through the focal point to form an image on the opposite side of the lens.