Explain how a thumbtack is designed so that you do not have to use a lot of force to push it through paper or the surface of a bulletin board?

A 1385 kg cannon containing a 58.5 kg cannon ball is on wheels. the cannon fires the cannon ball giving it a velocity of 49.8 m/s north. what is the initial velocity of the cannon the instant after it fires the cannon ball?

A ball is thrown in the air with a vertical velocity of 12 m/s. (a.) How long does it take to get to the top of its flights? (b.) What is the average velocity of the ball on the way to the top? (c.

Which statement describes a newton? A. It exists only for objects on Earth. B. It measures the mass of an object. C. It reflects the amount of force an object exerts. D. It states that every object attracts another object.

A bowling ball of mass 8 kg hits a wall going 5 m/s and rebounds at a speed of 4 m/s. What was the impulse applied to the bowling ball?

While camping you see the reflection of the moon on the lake. it looks like a bright flat sphere on the water. what phase of the lunar cycle is the moon likely in? a. old moon b. new moon c. full moon d. waxig gibbous

Which statement best describes the effect of scientific advances on society? A. They always have a positive impact on society. B. They are inspired by the needs of society. C. they do not affect society beyond the community level. D.

Which is the best example of reusing? repairing a stove instead of buying a new one wearing a pair of pants made from cotton buying a toy packaged in paper instead of plastic placing a glass bottle in the recycling bin

The sunlight hits the surface of a lake this will like caused a. condensation b. transpiration c. evaporation d. sublimation

The development of the cell theory was mostly directly related to the

Choose the term that best completes the sentence. A way of grouping organisms based on the characteristics they share is The science of naming and classifying organisms is called A two-word system for naming organisms in which the first part is the