Two forces a 60 newton force east and an 80 newton force north

If an object starts at rest and moves 60 meters north along a straight line for 2 seconds, what is its average velocity? Question 5 options: a) 120 m/s b) 30 m/s c) 60 m/s d) 30 m/s, north

How much tension is there in a rope that hold a 20-N bag of apples at rest?

A sled of mass m is given a kick on a frozen pond. The kick imparts to it an initial speed of 2.20 m/s. The coefficient of kinetic friction between sled and ice is 0.115. Use energy considerations to find the distance the sled moves before it stops.

Is the speed of light the same in any material? Why or why not?

Which organism was the first to develop in the absence of oxygen? A. algae B. cyanobacteria C. prokaryotic D. eukaryotic

Define colloid and list two examples.

An earthquake 50km from a city produces P and S waves that travel outward at 5000 and 3000 m/s, respectively. Once city residents feel the shaking of the P wave, how much time do they have before the S wave arrives?

You throw a rock upwards; it rises and then falls back down. We know that the acceleration due to gravity is 9.8 m/sec2 near the surface of earth.

Wich process occurs in a human muscle when it is forced to make tap without oxegen

What type of waves do you think sunscreen our skin from cancer from?