In which situation is the acceleration of the car negative?
a.)the velocity of a car was 75 km/h
b.)the velocity of a car reduced from 50 km/h over one minute
c.)the velocity of a car increased from 40 km/h to 75km/h over 15 minutes
d.)the velocity of a car increased from 40 km/sh at 2: 00pm and at 4: 00pm the velocity of the car was 85 km/h

B) The velocity of the car reduced from 50k/m over one min.

Answer is: B.)The velocity of a car reduced from 50 km/h over one minute.

Ending velocity is defined as the velocity attained by a body after completing distance at certain time interval:

v(ending velocity) = v(initial velocity) + a·t.

a is acceleration attained by the body (in this examle car).

t is time (in this example one minute).

Because velocity is reduced, acceleration has negative sign.

An car average acceleration over a period of time is its change in velocity.

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.