The correct unit for force is the Newton (=1 kg·m/s2) which is abbreviated N. So a 100 kg mass really weighs about 980 Newtons on Earth.

The normal force is equal to your apparent weight. So, you actually feel a little heavier than usual when the elevator accelerates upward, and lighter than usual when the acceleration is down.

0.44m/s2.

When the elevator is moving, we will weigh our normal weight. Since we are already moving at the same speed as the elevator (up or down), nothing is affecting us to change our weight. However, when the elevator starts to go or stops, our body resists it. The same thing works when the elevator starts moving.

If you stand on a scale in an elevator accelerating upward, you feel heavier because the elevator’s floor presses harder on your feet, and the scale will show a higher reading than when the elevator is at rest. On the other hand, when the elevator accelerates downward, you feel lighter.

If you are accelerating, Newton’s Second Law says that the net force on you is not zero, which means the upward and downward forces do not cancel. This means that the floor pushes on you with a force that is not equal to your weight – your apparent weight changes.

Mars

24 hours

Day can be defined as each of the twenty-four-hour periods, reckoned from one midnight to the next, into which a week, month, or year is divided, and corresponding to a rotation of the earth on its axis.

There are 24 hours in a day. The day is divided into day(time) and night(-time). Daytime is from sunrise (this varies, but we can say approximately 6am) to sunset (we can say approximately 6pm). Night-time is from sunset to sunrise.

12 hours in days. 12 hours is equal to 0.5 days.

A Day is 24 Hours Long

24 Hour Clock	AM / PM	What Many Children Would Be Doing
9:00	9:00 AM	At School
10:00	10:00 AM	At School
11:00	11:00 AM	At School
12:00	12 Noon	Having lunch

Thanks to the ancient civilizations that defined and preserved the divisions of time, modern society still conceives of a day of 24 hours, an hour of 60 minutes and a minute of 60 seconds. Advances in the science of timekeeping, however, have changed how these units are defined.

Times more than 25 States that started 15 hours a week is how many days a level greater than the average American.. Of time so 15 days is equivalent to 360 hours: 8 hours a day & days! The Moon d ) is a unit of time equal to 1 0.0027777777777778.

For adult employees, there is no legal limit to the number of hours that one can work per week, but the Fair Labor Standards Act dictates standards for overtime pay in both the private and public sector. Weekend or night work does not apply for overtime pay unless it is over the mandated 40 hours.

If F is the net force applied on an object of mass m and the mass moves with an acceleration a then the equation goes like this, F = m a. To solve these elevator problems in physics students need to understand couple of terms first like Normal Reaction, Weight, Net Force and Acceleration.

For example, when you stand on the floor, the floor exerts an upward force on you. The normal force is always perpendicular to the surface. Apparent Weight is the name given to the force that you exert on another body – perhaps a weigh scale. Your apparent weight can be greater than your actual weight.

Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body.

When a body of mass m is placed on a weighing machine which is placed in a lift, then actual weight of the body is mg. This acts on a weighing machine which offers a reaction R given by the reading of weighing machine. This reaction exerted by the surface of contact on the body is the apparent weight of the body.

A freely falling object has weight W=mg, where W-weight, m-mass of the object and g-acceleration produced due to the earth’s gravity. This happens because the normal reaction force exerted on the object in the lift is equal to zero, and normal force equals to mg, which in turn equals the weight of the object.

There is no pressure of your feet on the scales, and no pressure of the floor on the scales, so the scales will read zero*. Hence, your weight, in a freely falling lift is zero.

Below we give 10 tips to lose 10 kilos in a shorter time.

1. Tip 1: Avoid carbohydrate-rich products. Avoid buying carbohydrate-rich foods so you’re not tempted to eat them.
2. Tip 2: Prepare your own meals. Prepare your own food ensures that you can make the right choices.
3. Tip 3: Eat more protein and fat.

According to BMI chart and their classification, BMI score of 26.56 for 68 kilograms weight & 160 cm tall indicates that your weight is Overweight.

What’s My Ideal Body Weight and BMI?

Male		Female
Height	Ideal Weight	Ideal Weight
5′ 7″	133 – 163 lbs.	122 – 149 lbs.
5′ 8″	139 – 169 lbs.	126 – 154 lbs.
5′ 9″	144 – 176 lbs.	131 – 160 lbs.

Height and Weight Chart

Height	Weight
5′ 1″	100 to 131 lbs.	132 to 157 lbs.
5′ 2″	104 to 135 lbs.	136 to 163 lbs.
5′ 3″	107 to 140 lbs.	141 to 168 lbs.
5′ 4″	110 to 144 lbs.	145 to 173 lbs.

The 3-Day Diet claims dieters can lose up to 10 pounds in three days. Weight loss is possible on The 3 Day Diet, but only because it is very low in calories.

After 1 year, those on the 1,200–1,500-calorie-per-day diet experienced an average weight loss of 15 pounds (6.8 kg). However, 23% of the 4,588 people following the 1,200-calorie diet dropped out of the study ( 7 ).