maths

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1. physics

   A 1100 kg car coasts on a horizontal road with a speed of 19 m/s. After crossing a an unpaved, sandy stretch of road 32 m long, its speed decreases to 12 m/s. (a) Was the net force done on the car positive, negative, or zero?

2. Physics

   The speed limit on suburban roads is 50 km/h. You are traveling at the limit when an empty bag blows onto the road from behind a parked car 5.0m in front of you. If you maintain your speed how long will it be before you hit?

3. maths-surface area

   The diameter of a road roller is 140cm and its length is 2.2m. It takes 400 complete revolutions to move over to level a stretch of a road 2.2m wide find the surface area of stretch of road leveled in m sq.

4. Physics

   The speed limit on suburban roads is 50 km/h. You are traveling at the limit when an empty bag blows onto the road from behind a parked car 5.0m in front of you. If you maintain your speed how long will it be before you hit?

1. Physics

   The design of a new road includes a straight stretch that is horizontal and flat but that suddenly dips down a steep hill at 25°. The transition should be rounded with what minimum radius so that cars traveling 97 km/h will not

2. physis

   A lorry is travelling at 60 km/hr when the brakes are applied. Assuming that the deceleration is uniformly at 2m/hr, how far has the lorry travelled when its speed is 36km/hr after 6seconds.

3. Probability

   A police radar unit is set up to monitor vehicles on a stretch of highway with a speed limit of 100 km/h. Long-term records for this location show that speeds vary normally with a mean of 105 km/h and a standard deviation of 7

4. physics

   An engineer is trying to determine the maximum speed at which a vehicle travel around the curve without skidding. She know the coefficient of friction between the wheels and the road is 0.75 when the road is dry and 0.35 when the

1. Physics

   The speed limit on suburban roads is 50 km/h. You are traveling at the limit when an empty bag blows onto the road from behind a parked car 5.0m in front of you. If you maintain your speed how long will it be before you hit? In

2. physic

   The sports car in Figure 6 is travelling along 30 banked road having a radius of curvature of ñ=152 m. If the coefficient of static friction between the tires and the road is µs=0.2, determine the maximum safe speed so no

3. physics

   suppose you are driving on a straight two lane road at a constant speed of 88 km/h truck travelling at a constant speed of 104 km/h approaches you.what is the truck's velocity relative to you.

4. Health/PE

   I am completing a project for PE/Health and I am stuck. Can you help me? The problem is below: Choose any eight that stretch different parts of your body. Be sure to balance your body by stretching opposite body parts. For

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